| Name | CVE-2021-25635 |
| Description | An Improper Certificate Validation vulnerability in LibreOffice allowed an attacker to self sign an ODF document, with a signature untrusted by the target, then modify it to change the signature algorithm to an invalid (or unknown to LibreOffice) algorithm and LibreOffice would incorrectly present such a signature with an unknown algorithm as a valid signature issued by a trusted person This issue affects LibreOffice: from 7.0 before 7.0.5, from 7.1 before 7.1.1. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| libreoffice (PTS) | bullseye | 1:7.0.4-4+deb11u10 | fixed |
| bullseye (security) | 1:7.0.4-4+deb11u13 | fixed | |
| bookworm | 4:7.4.7-1+deb12u9 | fixed | |
| bookworm (security) | 4:7.4.7-1+deb12u8 | fixed | |
| trixie | 4:25.2.3-2+deb13u2 | fixed | |
| forky, sid | 4:25.8.1-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| libreoffice | source | (unstable) | (not affected) |
- libreoffice <not-affected> (Only affects Microsoft Crypto API back-end)
https://www.libreoffice.org/about-us/security/advisories/CVE-2021-25635
https://www.openwall.com/lists/oss-security/2021/10/11/3
Fixed by: https://github.com/LibreOffice/core/commit/edeb164c1d8ab64116afee4e2140403a362a1358 (7-0)
Fixed by: https://github.com/LibreOffice/core/commit/a5fe0bea138c5b32268a5cd0093908909d8bc013 (7-1)