CVE-2021-3449: NULL pointer deref in signature_algorithms processing
Published Mar 25, 2021
·Updated
An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signaturealgorithms extension (where it was present in the initial ClientHello), but includes a signaturealgorithmscert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j).
Other sources
OpenSSL is vulnerable to a denial of service, caused by a NULL pointer dereference in signaturealgorithms processing. By sending a specially crafted renegotiation ClientHello message from a client, a remote attacker could exploit this vulnerability to cause the TLS server to crash.
— IBM
This is a vulnerability in OpenSSL which may be exploited through Node.js. You can read more about it in https://www.openssl.org/news/secadv/20210325.txt
— Node.Js
Affected Software
370 affected componentsFixes available
rust/openssl-src<111.15.0
111.15.0
debian/openssl
1.1.1n-0+deb10u31.1.1n-0+deb10u61.1.1w-0+deb11u11.1.1n-0+deb11u53.0.11-1~deb12u13.0.11-1~deb12u23.0.11-13.0.12-1
IBM Security Verify Bridge<=All
OpenSSL OpenSSL>=1.1.1<1.1.1k
Debian Debian Linux=9.0
Debian Debian Linux=10.0
FreeBSD FreeBSD=12.2
FreeBSD FreeBSD=12.2-p1
FreeBSD FreeBSD=12.2-p2
NetApp Active Iq Unified Manager Vmware Vsphere
NetApp Cloud Volumes Ontap Mediator
NetApp E-series Performance Analyzer
NetApp OnCommand Insight
NetApp OnCommand Workflow Automation
NetApp ONTAP Select Deploy administration utility
NetApp Santricity Smi-s Provider
NetApp Snapcenter
NetApp Storagegrid
Tenable Log Correlation Engine<6.0.9
Tenable Nessus<=8.13.1
Tenable Nessus Network Monitor=5.11.0
Tenable Nessus Network Monitor=5.11.1
Tenable Nessus Network Monitor=5.12.0
Tenable Nessus Network Monitor=5.12.1
Tenable Nessus Network Monitor=5.13.0
Tenable Tenable.Sc>=5.13.0<=5.17.0
Fedoraproject Fedora=34
McAfee Web Gateway=8.2.19
McAfee Web Gateway=9.2.10
McAfee Web Gateway=10.1.1
McAfee Web Gateway Cloud Service=8.2.19
McAfee Web Gateway Cloud Service=9.2.10
McAfee Web Gateway Cloud Service=10.1.1
Checkpoint Quantum Security Management Firmware=r80.40
Checkpoint Quantum Security Management Firmware=r81
Checkpoint Quantum Security Management
Checkpoint Multi-domain Management Firmware=r80.40
Checkpoint Multi-domain Management Firmware=r81
Checkpoint Multi-domain Management
Checkpoint Quantum Security Gateway Firmware=r80.40
Checkpoint Quantum Security Gateway Firmware=r81
Checkpoint Quantum Security Gateway
Oracle Communications Communications Policy Management=12.6.0.0.0
Oracle Enterprise Manager For Storage Management=13.4.0.0
Oracle Essbase=21.2
Oracle GraalVM=19.3.5
Oracle GraalVM=20.3.1.2
Oracle GraalVM=21.0.0.2
Oracle JD Edwards EnterpriseOne Tools<9.2.6.0
Oracle Jd Edwards World Security=a9.4
Oracle MySQL Connectors<=8.0.23
Oracle MySQL Server<=5.7.33
Oracle MySQL Server>=8.0.15<=8.0.23
Oracle MySQL Workbench<=8.0.23
Oracle PeopleSoft Enterprise PeopleTools=8.57
Oracle PeopleSoft Enterprise PeopleTools=8.58
Oracle PeopleSoft Enterprise PeopleTools=8.59
Oracle Primavera Unifier>=17.7<=17.12
Oracle Primavera Unifier=19.12
Oracle Primavera Unifier=20.12
Oracle Primavera Unifier=21.12
Oracle Secure Backup<18.1.0.1.0
Oracle Secure Global Desktop=5.6
Oracle ZFS Storage Appliance Kit=8.8
SonicWall Sma100 Firmware>=10.2.0.0<10.2.1.0-17sv
SonicWall SMA100
SonicWall Capture Client=3.5
SonicWall SonicOS=7.0.1.0
Siemens Ruggedcom Rcm1224 Firmware>=6.2
Siemens Ruggedcom Rcm1224
Siemens Scalance Lpe9403 Firmware
Siemens SCALANCE LPE9403
Siemens Scalance M-800 Firmware>=6.2
Siemens SCALANCE M-800
Siemens Scalance S602 Firmware>=4.1
Siemens SCALANCE S602
Siemens Scalance S612 Firmware>=4.1
Siemens SCALANCE S612
Siemens Scalance S615 Firmware>=6.2
Siemens SCALANCE S615
Siemens Scalance S623 Firmware>=4.1
Siemens SCALANCE S623
Siemens Scalance S627-2m Firmware>=4.1
Siemens SCALANCE S627-2M
Siemens Scalance Sc-600 Firmware>=2.0
Siemens SCALANCE SC-600
Siemens Scalance W700 Firmware>=6.5
Siemens Scalance W700
Siemens Scalance W1700 Firmware>=2.0
Siemens Scalance W1700
Siemens Scalance Xb-200 Firmware<4.3
Siemens SCALANCE XB-200
Siemens Scalance Xc-200 Firmware<4.3
Siemens SCALANCE XC-200
Siemens Scalance Xf-200ba Firmware<4.3
Siemens SCALANCE XF-200BA
Siemens Scalance Xm-400 Firmware<6.4
Siemens Scalance Xm-400
Siemens Scalance Xp-200 Firmware<4.3
Siemens SCALANCE XP-200
Siemens Scalance Xr-300wg Firmware<4.3
Siemens SCALANCE XR-300WG
Siemens Scalance Xr524-8c Firmware<6.4
Siemens Scalance Xr524-8c
Siemens Scalance Xr526-8c Firmware<6.4
Siemens Scalance Xr526-8c
Siemens Scalance Xr528-6m Firmware<6.4
Siemens Scalance Xr528-6m
Siemens Scalance Xr552-12 Firmware<6.4
Siemens Scalance Xr552-12
Siemens Simatic Cloud Connect 7 Firmware>=1.1
Siemens Simatic Cloud Connect 7 Firmware
Siemens Simatic Cloud Connect 7
Siemens Simatic Cp 1242-7 Gprs V2 Firmware>=3.1
Siemens Simatic Cp 1242-7 Gprs V2 Firmware
Siemens SIMATIC CP 1242-7 GPRS V2
Siemens Simatic Hmi Basic Panels 2nd Generation Firmware
Siemens Simatic Hmi Basic Panels 2nd Generation
Siemens Simatic Hmi Comfort Outdoor Panels Firmware
Siemens Simatic Hmi Comfort Outdoor Panels
Siemens Simatic Hmi Ktp Mobile Panels Firmware
Siemens Simatic Hmi Ktp Mobile Panels
Siemens Simatic Mv500 Firmware
Siemens Simatic Mv500
Siemens Simatic Net Cp 1243-1 Firmware>=3.1
Siemens Simatic Net Cp 1243-1
Siemens Simatic Net Cp1243-7 Lte Eu Firmware>=3.1
Siemens Simatic Net Cp1243-7 Lte Eu
Siemens Simatic Net Cp1243-7 Lte Us Firmware>=3.1
Siemens Simatic Net Cp1243-7 Lte Us
Siemens Simatic Net Cp 1243-8 Irc Firmware>=3.1
Siemens Simatic Net Cp 1243-8 Irc
Siemens Simatic Net Cp 1542sp-1 Irc Firmware>=2.1
Siemens Simatic Net Cp 1542sp-1 Irc
Siemens Simatic Net Cp 1543-1 Firmware>=2.2<3.0
Siemens Simatic Net Cp 1543-1
Siemens Simatic Net Cp 1543sp-1 Firmware>=2.1
Siemens Simatic Net Cp 1543sp-1
Siemens Simatic Net Cp 1545-1 Firmware>=1.0
Siemens Simatic Net Cp 1545-1
Siemens Simatic Pcs 7 Telecontrol Firmware
Siemens Simatic Pcs 7 Telecontrol
Siemens Simatic Pcs Neo Firmware
Siemens Simatic Pcs Neo
Siemens Simatic Pdm Firmware>=9.1.0.7
Siemens Simatic Pdm
Siemens Simatic Process Historian Opc Ua Server Firmware>=2019
Siemens Simatic Process Historian Opc Ua Server
Siemens Simatic Rf166c Firmware
Siemens Simatic Rf166c
Siemens Simatic Rf185c Firmware
Siemens Simatic Rf185c
Siemens Simatic Rf186c Firmware
Siemens Simatic Rf186c
Siemens Simatic Rf186ci Firmware
Siemens Simatic Rf186ci
Siemens Simatic Rf188c Firmware
Siemens Simatic Rf188c
Siemens Simatic Rf188ci Firmware
Siemens Simatic Rf188ci
Siemens Simatic Rf360r Firmware
Siemens Simatic Rf360r
Siemens Simatic S7-1200 Cpu 1211c Firmware
Siemens Simatic S7-1200 Cpu 1211c
Siemens Simatic S7-1200 Cpu 1212c Firmware
Siemens Simatic S7-1200 Cpu 1212c
Siemens Simatic S7-1200 Cpu 1212fc Firmware
Siemens Simatic S7-1200 Cpu 1212fc
Siemens Simatic S7-1200 Cpu 1214 Fc Firmware
Siemens Simatic S7-1200 Cpu 1214 Fc
Siemens Simatic S7-1200 Cpu 1214c Firmware
Siemens Simatic S7-1200 Cpu 1214c
Siemens Simatic S7-1200 Cpu 1215 Fc Firmware
Siemens Simatic S7-1200 Cpu 1215 Fc
Siemens Simatic S7-1200 Cpu 1215c Firmware
Siemens Simatic S7-1200 Cpu 1215c
Siemens Simatic S7-1200 Cpu 1217c Firmware
Siemens Simatic S7-1200 Cpu 1217c
Siemens Simatic S7-1500 Cpu 1518-4 Pn\/dp Mfp Firmware
Siemens Simatic S7-1500 Cpu 1518-4 Pn\/dp Mfp
Siemens Sinamics Connect 300 Firmware
Siemens Sinamics Connect 300
Siemens Tim 1531 Irc Firmware>=2.0<2.2
Siemens TIM 1531 IRC
Siemens SIMATIC Logon>=1.6.0.2
Siemens SIMATIC Logon=1.5-sp3_update_1
Siemens SIMATIC WinCC Runtime Advanced
Siemens Simatic Wincc Telecontrol
Siemens SINEC NMS=1.0
Siemens SINEC NMS=1.0-sp1
Siemens Sinec Pni
Siemens SINEMA Server=14.0
Siemens SINEMA Server=14.0-sp1
Siemens SINEMA Server=14.0-sp2
Siemens SINEMA Server=14.0-sp2_update1
Siemens SINEMA Server=14.0-sp2_update2
Siemens Sinumerik Opc Ua Server
Siemens Tia Administrator
Siemens Sinec Infrastructure Network Services<1.0.1.1
Nodejs Node.js>=10.0.0<=10.12.0
Nodejs Node.js>=10.13.0<=10.24.0
Nodejs Node.js>=12.0.0<=12.12.0
Nodejs Node.js>=12.13.0<12.22.1
Nodejs Node.js>=14.0.0<=14.14.0
Nodejs Node.js>=14.15.0<14.16.1
Nodejs Node.js>=15.0.0<15.14.0
All of the following
Any of the following
Checkpoint Quantum Security Management Firmware=r80.40
Checkpoint Quantum Security Management Firmware=r81
Checkpoint Quantum Security Management
All of the following
Any of the following
Checkpoint Multi-domain Management Firmware=r80.40
Checkpoint Multi-domain Management Firmware=r81
Checkpoint Multi-domain Management
All of the following
Any of the following
Checkpoint Quantum Security Gateway Firmware=r80.40
Checkpoint Quantum Security Gateway Firmware=r81
Checkpoint Quantum Security Gateway
All of the following
SonicWall Sma100 Firmware>=10.2.0.0<10.2.1.0-17sv
SonicWall SMA100
All of the following
Siemens Ruggedcom Rcm1224 Firmware>=6.2
Siemens Ruggedcom Rcm1224
All of the following
Siemens Scalance Lpe9403 Firmware
Siemens SCALANCE LPE9403
All of the following
Siemens Scalance M-800 Firmware>=6.2
Siemens SCALANCE M-800
All of the following
Siemens Scalance S602 Firmware>=4.1
Siemens SCALANCE S602
All of the following
Siemens Scalance S612 Firmware>=4.1
Siemens SCALANCE S612
All of the following
Siemens Scalance S615 Firmware>=6.2
Siemens SCALANCE S615
All of the following
Siemens Scalance S623 Firmware>=4.1
Siemens SCALANCE S623
All of the following
Siemens Scalance S627-2m Firmware>=4.1
Siemens SCALANCE S627-2M
All of the following
Siemens Scalance Sc-600 Firmware>=2.0
Siemens SCALANCE SC-600
All of the following
Siemens Scalance W700 Firmware>=6.5
Siemens Scalance W700
All of the following
Siemens Scalance W1700 Firmware>=2.0
Siemens Scalance W1700
All of the following
Siemens Scalance Xb-200 Firmware<4.3
Siemens SCALANCE XB-200
All of the following
Siemens Scalance Xc-200 Firmware<4.3
Siemens SCALANCE XC-200
All of the following
Siemens Scalance Xf-200ba Firmware<4.3
Siemens SCALANCE XF-200BA
All of the following
Siemens Scalance Xm-400 Firmware<6.4
Siemens Scalance Xm-400
All of the following
Siemens Scalance Xp-200 Firmware<4.3
Siemens SCALANCE XP-200
All of the following
Siemens Scalance Xr-300wg Firmware<4.3
Siemens SCALANCE XR-300WG
All of the following
Siemens Scalance Xr524-8c Firmware<6.4
Siemens Scalance Xr524-8c
All of the following
Siemens Scalance Xr526-8c Firmware<6.4
Siemens Scalance Xr526-8c
All of the following
Siemens Scalance Xr528-6m Firmware<6.4
Siemens Scalance Xr528-6m
All of the following
Siemens Scalance Xr552-12 Firmware<6.4
Siemens Scalance Xr552-12
All of the following
Any of the following
Siemens Simatic Cloud Connect 7 Firmware>=1.1
Siemens Simatic Cloud Connect 7 Firmware
Siemens Simatic Cloud Connect 7
All of the following
Any of the following
Siemens Simatic Cp 1242-7 Gprs V2 Firmware>=3.1
Siemens Simatic Cp 1242-7 Gprs V2 Firmware
Siemens SIMATIC CP 1242-7 GPRS V2
All of the following
Siemens Simatic Hmi Basic Panels 2nd Generation Firmware
Siemens Simatic Hmi Basic Panels 2nd Generation
All of the following
Siemens Simatic Hmi Comfort Outdoor Panels Firmware
Siemens Simatic Hmi Comfort Outdoor Panels
All of the following
Siemens Simatic Hmi Ktp Mobile Panels Firmware
Siemens Simatic Hmi Ktp Mobile Panels
All of the following
Siemens Simatic Mv500 Firmware
Siemens Simatic Mv500
All of the following
Siemens Simatic Net Cp 1243-1 Firmware>=3.1
Siemens Simatic Net Cp 1243-1
All of the following
Siemens Simatic Net Cp1243-7 Lte Eu Firmware>=3.1
Siemens Simatic Net Cp1243-7 Lte Eu
All of the following
Siemens Simatic Net Cp1243-7 Lte Us Firmware>=3.1
Siemens Simatic Net Cp1243-7 Lte Us
All of the following
Siemens Simatic Net Cp 1243-8 Irc Firmware>=3.1
Siemens Simatic Net Cp 1243-8 Irc
All of the following
Siemens Simatic Net Cp 1542sp-1 Irc Firmware>=2.1
Siemens Simatic Net Cp 1542sp-1 Irc
All of the following
Siemens Simatic Net Cp 1543-1 Firmware>=2.2<3.0
Siemens Simatic Net Cp 1543-1
All of the following
Siemens Simatic Net Cp 1543sp-1 Firmware>=2.1
Siemens Simatic Net Cp 1543sp-1
All of the following
Siemens Simatic Net Cp 1545-1 Firmware>=1.0
Siemens Simatic Net Cp 1545-1
All of the following
Siemens Simatic Pcs 7 Telecontrol Firmware
Siemens Simatic Pcs 7 Telecontrol
All of the following
Siemens Simatic Pcs Neo Firmware
Siemens Simatic Pcs Neo
All of the following
Siemens Simatic Pdm Firmware>=9.1.0.7
Siemens Simatic Pdm
All of the following
Siemens Simatic Process Historian Opc Ua Server Firmware>=2019
Siemens Simatic Process Historian Opc Ua Server
All of the following
Siemens Simatic Rf166c Firmware
Siemens Simatic Rf166c
All of the following
Siemens Simatic Rf185c Firmware
Siemens Simatic Rf185c
All of the following
Siemens Simatic Rf186c Firmware
Siemens Simatic Rf186c
All of the following
Siemens Simatic Rf186ci Firmware
Siemens Simatic Rf186ci
All of the following
Siemens Simatic Rf188c Firmware
Siemens Simatic Rf188c
All of the following
Siemens Simatic Rf188ci Firmware
Siemens Simatic Rf188ci
All of the following
Siemens Simatic Rf360r Firmware
Siemens Simatic Rf360r
All of the following
Siemens Simatic S7-1200 Cpu 1211c Firmware
Siemens Simatic S7-1200 Cpu 1211c
All of the following
Siemens Simatic S7-1200 Cpu 1212c Firmware
Siemens Simatic S7-1200 Cpu 1212c
All of the following
Siemens Simatic S7-1200 Cpu 1212fc Firmware
Siemens Simatic S7-1200 Cpu 1212fc
All of the following
Siemens Simatic S7-1200 Cpu 1214 Fc Firmware
Siemens Simatic S7-1200 Cpu 1214 Fc
All of the following
Siemens Simatic S7-1200 Cpu 1214c Firmware
Siemens Simatic S7-1200 Cpu 1214c
All of the following
Siemens Simatic S7-1200 Cpu 1215 Fc Firmware
Siemens Simatic S7-1200 Cpu 1215 Fc
All of the following
Siemens Simatic S7-1200 Cpu 1215c Firmware
Siemens Simatic S7-1200 Cpu 1215c
All of the following
Siemens Simatic S7-1200 Cpu 1217c Firmware
Siemens Simatic S7-1200 Cpu 1217c
All of the following
Siemens Simatic S7-1500 Cpu 1518-4 Pn\/dp Mfp Firmware
Siemens Simatic S7-1500 Cpu 1518-4 Pn\/dp Mfp
All of the following
Siemens Sinamics Connect 300 Firmware
Siemens Sinamics Connect 300
All of the following
Siemens Tim 1531 Irc Firmware>=2.0<2.2
Siemens TIM 1531 IRC
Node.js Node.js>=10.0.0<10.24.1, >=12.0.0<12.22.1, >=14.0.0<14.16.1, >=15.0.0<15.14.0
10.24.112.22.114.16.115.14.0
Node.js Node.js>=10.0.0<10.24.1
10.24.1
Node.js Node.js>=12.0.0<12.22.1
12.22.1
Node.js Node.js>=14.0.0<14.16.1
14.16.1
Node.js Node.js>=15.0.0<15.14.0
15.14.0
alpine/openssl>=1.1.1<1.1.1k-r0
1.1.1k-r0
alpine/openssl>=1.1.1<1.1.1k-r0
1.1.1k-r0
alpine/openssl>=1.1.1<1.1.1k-r0
1.1.1k-r0
alpine/openssl>=1.1.1<1.1.1k-r0
1.1.1k-r0
alpine/openssl>=1.1.1<1.1.1k-r0
1.1.1k-r0
alpine/openssl>=1.1.1<1.1.1k-r0
1.1.1k-r0
alpine/openssl>=1.1.1<1.1.1k-r0
1.1.1k-r0
alpine/openssl>=1.1.1<1.1.1k-r0
1.1.1k-r0
alpine/openssl>=1.1.1<1.1.1k-r0
1.1.1k-r0
alpine/openssl>=1.1.1<1.1.1k-r0
1.1.1k-r0
alpine/openssl>=1.1.1<1.1.1k-r0
1.1.1k-r0
alpine/openssl>=1.1.1<1.1.1k-r0
1.1.1k-r0
alpine/openssl>=1.1.1<1.1.1k-r0
1.1.1k-r0
alpine/openssl>=1.1.1<1.1.1k-r0
1.1.1k-r0
alpine/openssl>=1.1.1<1.1.1k-r0
1.1.1k-r0
alpine/openssl>=1.1.1<1.1.1k-r0
1.1.1k-r0
alpine/openssl1.1-compat<1.1.1k-r0
1.1.1k-r0
alpine/openssl1.1-compat<1.1.1k-r0
1.1.1k-r0
alpine/openssl3<1.1.1k-r0
1.1.1k-r0
alpine/openssl3<1.1.1k-r0
1.1.1k-r0
alpine/synapse<1.30.1-r0
1.30.1-r0
alpine/synapse<1.30.1-r0
1.30.1-r0
alpine/synapse<1.30.1-r0
1.30.1-r0
alpine/synapse<1.30.1-r0
1.30.1-r0
alpine/synapse<1.30.1-r0
1.30.1-r0
alpine/synapse<1.30.1-r0
1.30.1-r0
alpine/synapse<1.30.1-r0
1.30.1-r0
alpine/synapse<1.30.1-r0
1.30.1-r0
alpine/synapse<1.30.1-r0
1.30.1-r0
alpine/synapse<1.30.1-r0
1.30.1-r0
alpine/synapse<1.30.1-r0
1.30.1-r0
alpine/synapse<1.30.1-r0
1.30.1-r0
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
rust/openssl-srcto a version that resolves this vulnerability.Fixed in 111.15.0 - Upgrade
Upgrade
debian/opensslto a version that resolves this vulnerability.Fixed in 1.1.1n-0+deb10u3Fixed in 1.1.1n-0+deb10u6Fixed in 1.1.1w-0+deb11u1Fixed in 1.1.1n-0+deb11u5Fixed in 3.0.11-1~deb12u1Fixed in 3.0.11-1~deb12u2Fixed in 3.0.11-1Fixed in 3.0.12-1 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.24.1Fixed in 12.22.1Fixed in 14.16.1Fixed in 15.14.0 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.24.1 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 12.22.1 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 14.16.1 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 15.14.0 - Upgrade
Upgrade
alpine/opensslto a version that resolves this vulnerability.Fixed in 1.1.1k-r0 - Upgrade
Upgrade
alpine/openssl1.1-compatto a version that resolves this vulnerability.Fixed in 1.1.1k-r0 - Upgrade
Upgrade
alpine/openssl3to a version that resolves this vulnerability.Fixed in 1.1.1k-r0 - Upgrade
Upgrade
alpine/synapseto a version that resolves this vulnerability.Fixed in 1.30.1-r0 - Upgrade
Upgrade
OpenSSLto a version that resolves this vulnerability.Fixed in 1.1.1k
Event History
Mar 25, 2021
CVE Published
via MITRE·02:25 PM
Data Sourced
via MITRE·02:25 PM
DescriptionWeakness
Data Sourced
via NVD·03:15 PM
RemedyDescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·03:15 PM
DescriptionSeverityAffected Software
Mar 26, 2021
Exploit Published
via GitHub·01:09 AM
Apr 6, 2021
Data Sourced
via Node.js·08:09 PM
SeverityAffected Software
Data Sourced
via Node.js·08:51 PM
Description
Aug 25, 2021
Advisory Published
08:54 PM
Parent advisories
This vulnerability appears in the following advisories.
Frequently Asked Questions
1
What is CVE-2021-3449?
CVE-2021-3449 is a vulnerability in OpenSSL TLS servers that can cause a crash when a malicious renegotiation ClientHello message is sent.
2
How severe is CVE-2021-3449?
CVE-2021-3449 has a severity rating of medium with a CVSS score of 5.9.
3
Which software is affected by CVE-2021-3449?
OpenSSL versions up to and including 1.1.1n, 3.0.9, and 3.0.10 are affected by CVE-2021-3449.
4
How can I fix CVE-2021-3449?
Update your OpenSSL software to version 1.1.1o, 3.0.11, or later to mitigate the vulnerability.
5
Where can I find more information about CVE-2021-3449?
You can find more information about CVE-2021-3449 in the NVD and CERT-Portal advisories, as well as the OpenSSL Git repository.