CVE-2021-22925: Buffer Overflow
First published: Fri Jun 11 2021(Updated: )
A flaw was found in the way curl handled telnet protocol option for sending environment variables, which could lead to sending of uninitialized data from a stack-based buffer to the server. This issue leads to potentially revealing sensitive internal information to the server using a clear-text network protocol.
Credit: Red Hat Product Security support@hackerone.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/curl | <0:7.61.1-22.el8 | 0:7.61.1-22.el8 |
| redhat/curl | <7.78.0 | 7.78.0 |
| Apple macOS | <11.6 | 11.6 |
| macOS Catalina | ||
| IBM Security QRadar | <=7.5.0 GA | |
| IBM Security QRadar | <=7.4.3 GA - 7.4.3 FP4 | |
| IBM Security QRadar | <=7.3.3 GA - 7.3.3 FP10 | |
| Curl | >=7.7<7.78.0 | |
| Red Hat Fedora | =33 | |
| NetApp Cloud Backup | ||
| IBM Data ONTAP | ||
| NetApp SolidFire & HCI Management Node | ||
| NetApp SolidFire & HCI Storage Node | ||
| Apple iOS and macOS | =10.15.7 | |
| Apple iOS and macOS | =10.15.7-security_update_2021-001 | |
| Apple iOS and macOS | =10.15.7-security_update_2021-002 | |
| Apple iOS and macOS | =10.15.7-security_update_2021-003 | |
| Apple iOS and macOS | =10.15.7-security_update_2021-004 | |
| macOS | =11.0 | |
| macOS | =11.0.1 | |
| macOS | =11.1 | |
| macOS | =11.1.0 | |
| macOS | =11.2 | |
| macOS | =11.2.1 | |
| macOS | =11.3 | |
| macOS | =11.3.1 | |
| macOS | =11.4 | |
| macOS | =11.5 | |
| MySQL | >=5.7.0<=5.7.35 | |
| MySQL | >=8.0.0<=8.0.26 | |
| Oracle PeopleTools | =8.57 | |
| Oracle PeopleTools | =8.58 | |
| Oracle PeopleTools | =8.59 | |
| Siemens SINEC Infrastructure Network Services | <1.0.1.1 | |
| Siemens SINEMA Remote Connect | <3.1 | |
| All of | ||
| NetApp H300S Firmware | ||
| NetApp H300S Firmware | ||
| All of | ||
| NetApp H500e Firmware | ||
| NetApp H500e Firmware | ||
| All of | ||
| NetApp H700S | ||
| NetApp H700S | ||
| All of | ||
| NetApp H300E | ||
| NetApp H300E Firmware | ||
| All of | ||
| NetApp H500S Firmware | ||
| NetApp H500e Firmware | ||
| All of | ||
| NetApp H700E | ||
| NetApp H700E | ||
| All of | ||
| NetApp H410S | ||
| NetApp H410S Firmware | ||
| Splunk Universal Forwarder | >=8.2.0<8.2.12 | |
| Splunk Universal Forwarder | >=9.0.0<9.0.6 | |
| Splunk Universal Forwarder | =9.1.0 | |
| NetApp H300S Firmware | ||
| NetApp H300S Firmware | ||
| NetApp H500e Firmware | ||
| NetApp H500e Firmware | ||
| NetApp H700S | ||
| NetApp H700S | ||
| NetApp H300E | ||
| NetApp H300E Firmware | ||
| NetApp H500S Firmware | ||
| NetApp H500e Firmware | ||
| NetApp H700E | ||
| NetApp H700E | ||
| NetApp H410S | ||
| NetApp H410S Firmware |
Remedy
This issue can be avoided by not setting any telnet options for the curl command line tool (using the -t / --telnet-option command line option) or the libcurl library (using the CURLOPT_TELNETOPTIONS option) when telnet protocol is not meant to be used. If telnet protocol needs to be used with curl / libcurl, along with the NEW_ENV telnet option, ensure that no environment variable set via the NEW_ENV option has the name or value longer than 127 bytes.
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2021-22925 https://nvd.nist.gov/vuln/detail/CVE-2021-22925
- https://bugzilla.redhat.com/show_bug.cgi?id=1970902
- https://access.redhat.com/errata/RHSA-2021:4511
- https://access.redhat.com/security/cve/cve-2021-22925
- http://seclists.org/fulldisclosure/2021/Sep/39
- http://seclists.org/fulldisclosure/2021/Sep/40
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
- https://hackerone.com/reports/1223882
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/
- https://security.gentoo.org/glsa/202212-01
- https://security.netapp.com/advisory/ntap-20210902-0003/
- https://support.apple.com/kb/HT212804
- https://support.apple.com/kb/HT212805
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://support.apple.com/en-us/HT212805 (Advisory)
- https://exchange.xforce.ibmcloud.com/vulnerabilities/206051
- https://www.ibm.com/support/pages/node/6574787 (Advisory)
- https://support.apple.com/en-us/HT212804 (Advisory)
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1964887
- https://curl.se/docs/CVE-2021-22898.html
- https://github.com/curl/curl/commit/39ce47f219b09c380b81f89fe54ac586c8db6bde
- https://hackerone.com/reports/1176461
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1984328
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1984329
- https://curl.se/docs/CVE-2021-22925.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/
Parent vulnerabilities
(Appears in the following advisories)
Peer vulnerabilities
(Found alongside the following vulnerabilities)
- CVE-2021-30811
- CVE-2021-30838
- CVE-2021-30834
- CVE-2021-30928
- CVE-2021-30860
- CVE-2021-31010
- CVE-2021-30827
- CVE-2021-30828
- CVE-2021-30829
- CVE-2021-22925
- CVE-2021-30832
- CVE-2021-30841
- CVE-2021-30842
- CVE-2021-30843
- CVE-2021-30853
- CVE-2021-30933
- CVE-2021-30835
- CVE-2021-30847
- CVE-2021-30830
- CVE-2021-30865
- CVE-2021-30857
- CVE-2021-30859
- CVE-2021-30864
- CVE-2013-0340
- CVE-2021-30813
- CVE-2021-30819
- CVE-2021-30855
- CVE-2021-30925
- CVE-2021-30850
- CVE-2021-30845
- CVE-2021-30844
- CVE-2021-30858
- CVE-2021-30783
- CVE-2020-29622
- CVE-2021-30713
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2021-22925.
What is the severity of CVE-2021-22925?
The severity of CVE-2021-22925 is medium.
What software is affected by CVE-2021-22925?
The affected software includes macOS Big Sur, Catalina, Red Hat curl, IBM QRadar SIEM.
How can I fix CVE-2021-22925 on macOS Big Sur?
You can fix CVE-2021-22925 on macOS Big Sur by updating to the latest version 11.6.
Where can I find more information about CVE-2021-22925?
You can find more information about CVE-2021-22925 at the following references: [link 1](https://support.apple.com/en-us/HT212804), [link 2](https://support.apple.com/en-us/HT212805), [link 3](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1964887).
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