Skip to content
Fencer Intel
low 3.3

CVE-2021-3349 json

GNOME Evolution through 3.38.3 produces a "Valid signature" message for an unknown identifier on a previously trusted key because Evolution…

published 5y ago modified 4mo ago also EUVD-2021-26680

cvss
3.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 28%
public exploits
0
none known

Summary

GNOME Evolution through 3.38.3 produces a "Valid signature" message for an unknown identifier on a previously trusted key because Evolution does not retrieve enough information from the GnuPG API. NOTE: third parties dispute the significance of this issue, and dispute whether Evolution is the best place to change this behavior

Patch / fix

  • evolution Alpine 3.13 3.38.4-r0

alpine advisories ALPINE-CVE-2021-3349

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Is CVE-2021-3349 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-3349 updated cvss 2.9

evolution-data-server: mail is shown as having a valid signature from an unknown identifier on a previously trusted key

  • Red Hat Enterprise Linux 6 evolution-data-server Red Hat Enterprise Linux 7 evolution-data-server, evolution-data-server-perl, evolution-data-server-tests, evolution-data-server-langpacks
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 evolution-data-server, evolution-data-server-perl, evolution-data-server-tests, evolution-data-server-langpacks
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux 9 evolution-data-server, evolution-data-server-ui, evolution-data-server-perl, evolution-data-server-tests, evolution-data-server-langpacks
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
2y ago

Exploit prediction

0.35% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • mgorny.pl https://mgorny.pl/articles/evolution-uid-trust-extrapolation.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-345 Insufficient Verification of Data Authenticity

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.