CVE-2020-26880

NameCVE-2020-26880
DescriptionSympa through 6.2.57b.2 allows a local privilege escalation from the sympa user account to full root access by modifying the sympa.conf configuration file (which is owned by sympa) and parsing it through the setuid sympa_newaliases-wrapper executable.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs972114

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
sympa (PTS)buster, buster (security)6.2.40~dfsg-1+deb10u1vulnerable
bullseye6.2.60~dfsg-4vulnerable
sid, trixie, bookworm6.2.70~dfsg-2vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
sympasource(unstable)(unfixed)972114

Notes

[bookworm] - sympa <postponed> (Revisit when fixed upstream; most setups mitigated)
[bullseye] - sympa <postponed> (Revisit when fixed upstream; most setups mitigated)
[buster] - sympa <postponed> (Revisit when fixed upstream; most setups mitigated)
[stretch] - sympa <postponed> (Mitigated, revisit when fixed upstream)
https://github.com/sympa-community/sympa/issues/1009
https://github.com/sympa-community/sympa/issues/943#issuecomment-704779420
https://github.com/sympa-community/sympa/issues/943#issuecomment-704842235
Mitigation: https://salsa.debian.org/sympa-team/sympa/-/commit/b904d5257beb135127f663ad8f6865c1b59efd50
Mitigation present in 6.2.58~dfsg-2, 6.2.40~dfsg-1+deb10u1 and 6.2.16~dfsg-3+deb9u4
uploads.

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