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CVE-2023-25136 Detail

Description

OpenSSH server (sshd) 9.1 introduced a double-free vulnerability during options.kex_algorithms handling. This is fixed in OpenSSH 9.2. The double free can be leveraged, by an unauthenticated remote attacker in the default configuration, to jump to any location in the sshd address space. One third-party report states "remote code execution is theoretically possible."


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.openwall.com/lists/oss-security/2023/02/13/1 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2023/02/22/1 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2023/02/22/2 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2023/02/23/3 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2023/03/06/1 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2023/03/09/2 Mailing List  Third Party Advisory 
https://bugzilla.mindrot.org/show_bug.cgi?id=3522 Exploit  Issue Tracking  Third Party Advisory 
https://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/017_sshd.patch.sig Patch  Vendor Advisory 
https://github.com/openssh/openssh-portable/commit/486c4dc3b83b4b67d663fb0fa62bc24138ec3946 Patch  Third Party Advisory 
https://jfrog.com/blog/openssh-pre-auth-double-free-cve-2023-25136-writeup-and-proof-of-concept/ Exploit  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JGAUIXJ3TEKCRKVWFQ6GDAGQFTIIGQQP/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7LKQDFZWKYHQ65TBSH2X2HJQ4V2THS3/
https://news.ycombinator.com/item?id=34711565 Issue Tracking  Third Party Advisory 
https://security.gentoo.org/glsa/202307-01 Third Party Advisory 
https://security.netapp.com/advisory/ntap-20230309-0003/ Third Party Advisory 
https://www.openwall.com/lists/oss-security/2023/02/02/2 Exploit  Mailing List  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-415 Double Free cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

18 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2023-25136
NVD Published Date:
02/03/2023
NVD Last Modified:
02/27/2024
Source:
MITRE