CVE-2020-26932

Name	CVE-2020-26932
Description	debian/sympa.postinst for the Debian Sympa package before 6.2.40~dfsg-7 uses mode 4755 for sympa_newaliases-wrapper, whereas the intended permissions are mode 4750 (for access by the sympa group)
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-2401-1, DSA-4818-1
Debian Bugs	971904

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
sympa (PTS)	jessie, jessie (lts)	6.1.23~dfsg-2+deb8u3	vulnerable
	stretch (security), stretch (lts), stretch	6.2.16~dfsg-3+deb9u5	fixed
	buster (security), buster, buster (lts)	6.2.40~dfsg-1+deb10u1	fixed
	bullseye	6.2.60~dfsg-4	fixed
	bookworm	6.2.70~dfsg-2	fixed
	sid, trixie	6.2.72~dfsg-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
sympa	source	jessie	(unfixed)	end-of-life
sympa	source	stretch	6.2.16~dfsg-3+deb9u3		DLA-2401-1
sympa	source	buster	6.2.40~dfsg-1+deb10u1		DSA-4818-1
sympa	source	(unstable)	6.2.40~dfsg-7			971904

Notes

Debian specific issue where sympa_newaliases-wrapper had loose permissions
(already suid root and word-executable) allowing to gain root privileges
without first to escalate to sympa user.
https://salsa.debian.org/sympa-team/sympa/-/merge_requests/1