CVE-2023-25136
CVE-2023-25136
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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."
CVSS 6.5 · Mittel · EPSS 89,8% · Korrektur verfügbar
- Veröffentlicht
- Aktualisiert
Technologie-Stack: system · network
Betroffene Produkte und Versionen
n/a
- Softwareversionen
- n/a: Betroffen
Keine Korrektur veröffentlicht
openssh Debian:12
- Betroffene Versionsbereiche
- ECOSYSTEM: < 1:9.2p1-1
Auf 1:9.2p1-1 aktualisieren
openssh Debian:13
- Betroffene Versionsbereiche
- ECOSYSTEM: < 1:9.2p1-1
Auf 1:9.2p1-1 aktualisieren
openssh Debian:14
- Betroffene Versionsbereiche
- ECOSYSTEM: < 1:9.2p1-1
Auf 1:9.2p1-1 aktualisieren
Originalquellen
- https://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/017_sshd.patch.sig
- https://www.openwall.com/lists/oss-security/2023/02/02/2
- https://bugzilla.mindrot.org/show_bug.cgi?id=3522
- https://github.com/openssh/openssh-portable/commit/486c4dc3b83b4b67d663fb0fa62bc24138ec3946
- https://jfrog.com/blog/openssh-pre-auth-double-free-cve-2023-25136-writeup-and-proof-of-concept/
- https://news.ycombinator.com/item?id=34711565
- http://www.openwall.com/lists/oss-security/2023/02/13/1
- http://www.openwall.com/lists/oss-security/2023/02/22/1
- http://www.openwall.com/lists/oss-security/2023/02/22/2
- http://www.openwall.com/lists/oss-security/2023/02/23/3
- http://www.openwall.com/lists/oss-security/2023/03/06/1
- http://www.openwall.com/lists/oss-security/2023/03/09/2
- https://security.netapp.com/advisory/ntap-20230309-0003/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7LKQDFZWKYHQ65TBSH2X2HJQ4V2THS3/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JGAUIXJ3TEKCRKVWFQ6GDAGQFTIIGQQP/
- https://security.gentoo.org/glsa/202307-01
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
- https://nvd.nist.gov/vuln/detail/CVE-2023-25136