TI-2021-02347 Aliases CVE-2021-3349 GHSA-q5mm-jcp2-mc43

GNOME Evolution through 3.38.3 produces a "Valid signature" message for an unknown…

MEDIUM 49CWE-345Published 2021-02-01 · Updated 2024-08-03

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: None · Low · None
Fix status: Deferred Red Hat: fix deferred

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-345.

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

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.0035 28th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Deferred Red Hat: fix deferred

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:gnome:evolution::::::::	up to 3.38.3	Vulnerable	GNOME

cpe:2.3:a:gnome:evolution:*:*:*:*:*:*:*:* Versions up to 3.38.3 Vulnerable ·GNOME

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux 6	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux 7	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux 8	Affected	No fix yet: Fix deferred

Not affected: 1 product

Red Hat Enterprise Linux 9

Timeline

2026-10-02 Threatist record created from CVE-2021-3349
2026-10-03 Alias added: GHSA-q5mm-jcp2-mc43

References

Exploit 1

https://mgorny.pl/articles/evolution-uid-trust-extrapolation.html

Advisory 2

TI-2008-01063 Heap-based buffer overflow in Evolution 2.22.1 allows user-assisted remote attackers to… CVSS 2.0HIGH 9.3
TI-2005-00087 Integer overflow in camel-lock-helper in Evolution 2.0.2 and earlier allows local users… CVSS 3.1CRITICAL 9.8
TI-2016-08767 camel/providers/imapx/camel-imapx-server.c in the IMAPx component in GNOME… CVSS 3.0CRITICAL 9.8
TI-2018-08919 addressbook/backends/ldap/e-book-backend-ldap.c in Evolution-Data-Server in GNOME… CVSS 3.0CRITICAL 9.8
TI-2008-01062 Buffer overflow in Evolution 2.22.1, when the ITip Formatter plugin is disabled, allows… CVSS 2.0HIGH 7.6
TI-2005-02415 Format string vulnerability in Evolution 1.4 through 2.3.6.1 allows remote attackers to… CVSS 2.0HIGH 7.5

See all 20 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences