| Name | CVE-2021-35938 |
| Description | A symbolic link issue was found in rpm. It occurs when rpm sets the desired permissions and credentials after installing a file. A local unprivileged user could use this flaw to exchange the original file with a symbolic link to a security-critical file and escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 990543 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| rpm (PTS) | jessie | 4.11.3-1.1 | vulnerable |
| stretch | 4.12.0.2+dfsg1-2 | vulnerable |
| buster | 4.14.2.1+dfsg1-1 | vulnerable |
| bullseye | 4.16.1.2+dfsg1-3 | vulnerable |
| bookworm | 4.18.0+dfsg-1+deb12u1 | fixed |
| sid, trixie | 4.20.0+dfsg-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| rpm | source | (unstable) | 4.18.0+dfsg-1 | | | 990543 |
Notes
[bullseye] - rpm <ignored> (Minor issue)
[buster] - rpm <ignored> (Minor issue)
[stretch] - rpm <no-dsa> (Minor issue)
https://bugzilla.redhat.com/show_bug.cgi?id=1964114
https://github.com/rpm-software-management/rpm/commit/25a435e90844ea98fe5eb7bef22c1aecf3a9c033
[jessie] - rpm <no-dsa> (Minor issue)