high
7.5
CWE
203
Advisory Published
CVE Published
CVE Published
Advisory Published
Updated

CVE-2022-4304: Timing Oracle in RSA Decryption

First published: Wed Jan 25 2023(Updated: )

A timing based side channel exists in the OpenSSL RSA Decryption implementation which could be sufficient to recover a plaintext across a network in a Bleichenbacher style attack. To achieve a successful decryption an attacker would have to be able to send a very large number of trial messages for decryption. The vulnerability affects all RSA padding modes: PKCS#1 v1.5, RSA-OEAP and RSASVE. For example, in a TLS connection, RSA is commonly used by a client to send an encrypted pre-master secret to the server. An attacker that had observed a genuine connection between a client and a server could use this flaw to send trial messages to the server and record the time taken to process them. After a sufficiently large number of messages the attacker could recover the pre-master secret used for the original connection and thus be able to decrypt the application data sent over that connection.

Credit: openssl-security@openssl.org openssl-security@openssl.org openssl-security@openssl.org

Affected SoftwareAffected VersionHow to fix
redhat/jbcs-httpd24-openssl<1:1.1.1k-14.el8
1:1.1.1k-14.el8
redhat/jbcs-httpd24-openssl<1:1.1.1k-14.el7
1:1.1.1k-14.el7
redhat/edk2<0:20220126gitbb1bba3d77-4.el8
0:20220126gitbb1bba3d77-4.el8
redhat/openssl<1:1.1.1k-9.el8_7
1:1.1.1k-9.el8_7
redhat/edk2<0:20220126gitbb1bba3d77-2.el8_6.1
0:20220126gitbb1bba3d77-2.el8_6.1
redhat/openssl<1:1.1.1k-9.el8_6
1:1.1.1k-9.el8_6
redhat/openssl<1:3.0.1-47.el9_1
1:3.0.1-47.el9_1
redhat/edk2<0:20221207gitfff6d81270b5-9.el9_2
0:20221207gitfff6d81270b5-9.el9_2
redhat/openssl<1:3.0.1-46.el9_0
1:3.0.1-46.el9_0
redhat/jws5-tomcat-native<0:1.2.31-14.redhat_14.el7
0:1.2.31-14.redhat_14.el7
redhat/jws5-tomcat-native<0:1.2.31-14.redhat_14.el8
0:1.2.31-14.redhat_14.el8
redhat/jws5-tomcat-native<0:1.2.31-14.redhat_14.el9
0:1.2.31-14.redhat_14.el9
OpenSSL OpenSSL>=1.0.2<1.0.2zg
OpenSSL OpenSSL>=1.1.1<1.1.1t
OpenSSL OpenSSL>=3.0.0<3.0.8
Stormshield Endpoint Security<7.2.40
Stormshield Sslvpn<3.2.1
Stormshield Stormshield Network Security>=2.7.0<2.7.11
Stormshield Stormshield Network Security>=2.8.0<3.7.34
Stormshield Stormshield Network Security>=3.8.0<3.11.22
Stormshield Stormshield Network Security>=4.0.0<4.3.16
Stormshield Stormshield Network Security>=4.4.0<4.6.3
rust/openssl-src>=300.0.0<300.0.12
300.0.12
rust/openssl-src<111.25.0
111.25.0
F5 BIG-IP>=17.0.0<=17.1.0
17.1.117.1.0.1
F5 BIG-IP>=16.1.0<=16.1.4
16.1.5
F5 BIG-IP>=15.1.0<=15.1.9
15.1.10
F5 BIG-IP>=14.1.0<=14.1.5
F5 BIG-IP>=13.1.0<=13.1.5
F5 BIG-IP Next SPK>=1.5.0<=1.7.1
F5 BIG-IQ Centralized Management>=8.0.0<=8.3.0
F5 BIG-IQ Centralized Management=7.1.0
F5 F5OS-A=1.3.1
F5 Traffix SDC=5.2.0
debian/openssl
1.1.1w-0+deb11u1
1.1.1n-0+deb11u5
3.0.14-1~deb12u1
3.0.14-1~deb12u2
3.3.2-1
IBM Cloud Pak for Business Automation<=V22.0.2 - V22.0.2-IF004
IBM Cloud Pak for Business Automation<=V21.0.3 - V21.0.3-IF020
IBM Cloud Pak for Business Automation<=V22.0.1 - V22.0.1-IF006 and later fixesV21.0.2 - V21.0.2-IF012 and later fixesV21.0.1 - V21.0.1-IF007 and later fixesV20.0.1 - V20.0.3 and later fixesV19.0.1 - V19.0.3 and later fixesV18.0.0 - V18.0.2 and later fixes

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2022-4304?

    CVE-2022-4304 is a vulnerability in the OpenSSL RSA Decryption implementation that allows an attacker to recover plaintext data in a Bleichenbacher style attack.

  • What is the severity of CVE-2022-4304?

    The severity of CVE-2022-4304 is medium with a CVSS score of 5.9.

  • Which software versions are affected by CVE-2022-4304?

    OpenSSL versions 1.0.2 to 1.0.2zg, 1.1.1 to 1.1.1t, and 3.0.0 to 3.0.8 are affected by CVE-2022-4304.

  • How can an attacker exploit CVE-2022-4304?

    An attacker can exploit CVE-2022-4304 by sending a large number of trial messages to perform a timing-based side channel attack.

  • Is there a patch available for CVE-2022-4304?

    Yes, patches are available for the affected versions of OpenSSL.

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