CVE-2022-2127

NameCVE-2022-2127
DescriptionAn out-of-bounds read vulnerability was found in Samba due to insufficient length checks in winbindd_pam_auth_crap.c. When performing NTLM authentication, the client replies to cryptographic challenges back to the server. These replies have variable lengths, and Winbind fails to check the lan manager response length. When Winbind is used for NTLM authentication, a maliciously crafted request can trigger an out-of-bounds read in Winbind, possibly resulting in a crash.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-3792-1, DSA-5477-1, DSA-5647-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
samba (PTS)bullseye (security), bullseye2:4.13.13+dfsg-1~deb11u6fixed
bookworm, bookworm (security)2:4.17.12+dfsg-0+deb12u1fixed
sid, trixie2:4.21.1+dfsg-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
sambasourcebuster2:4.9.5+dfsg-5+deb10u5DLA-3792-1
sambasourcebullseye2:4.13.13+dfsg-1~deb11u6DSA-5647-1
sambasourcebookworm2:4.17.10+dfsg-0+deb12u1DSA-5477-1
sambasource(unstable)2:4.18.5+dfsg-1

Notes

https://www.samba.org/samba/security/CVE-2022-2127.html
In scope for continued Samba support

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