CVE catalog

CVE-2018-16868

gnutls28: CVE-2018-16868

Severity: Medium · CVSS 5.3CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
Published: Dec 3, 2018, 2:29:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.58% · Oct 25, 2026

A Bleichenbacher type side-channel based padding oracle attack was found in the way gnutls handles verification of RSA decrypted PKCS#1 v1.5 data. An attacker who is able to run process on the same physical core as the victim process, could use this to extract plaintext or in some cases downgrade any TLS connections to a vulnerable server.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	gnutls28	sid	`3.8.13-1`	fixed
Debian	gnutls28	forky	`3.8.13-1`	fixed
Debian	gnutls28	trixie	`3.8.9-3+deb13u4`	fixed
Debian	gnutls28	trixie-security	`3.8.9-3+deb13u4`	fixed
Debian	gnutls28	bookworm	`3.7.9-2+deb12u7`	fixed
Debian	gnutls28	bookworm-security	`3.7.9-2+deb12u7`	fixed
Ubuntu	gnutls26	pro	`2.12.23-1ubuntu4`	vulnerable
Ubuntu	gnutls26	pro	`2.12.23-1ubuntu5`	vulnerable
Ubuntu	gnutls26	pro	`2.12.23-12ubuntu1`	vulnerable
Ubuntu	gnutls26	pro	`2.12.23-12ubuntu2`	vulnerable
Ubuntu	gnutls26	pro	`2.12.23-12ubuntu2.1`	vulnerable
Ubuntu	gnutls26	pro	`2.12.23-12ubuntu2.2`	vulnerable
Ubuntu	gnutls26	pro	`2.12.23-12ubuntu2.3`	vulnerable
Ubuntu	gnutls26	pro	`2.12.23-12ubuntu2.4`	vulnerable
Ubuntu	gnutls26	pro	`2.12.23-12ubuntu2.5`	vulnerable
Ubuntu	gnutls26	pro	`2.12.23-12ubuntu2.6`	vulnerable
Ubuntu	gnutls26	pro	`2.12.23-12ubuntu2.7`	vulnerable
Ubuntu	gnutls26	pro	`2.12.23-12ubuntu2.8`	vulnerable
Ubuntu	gnutls26	pro	`2.12.23-12ubuntu2.10+esm1`	vulnerable
Ubuntu	gnutls28	pro	`3.5.8-6ubuntu3`	vulnerable
Ubuntu	gnutls28	pro	`3.5.17-1ubuntu1`	vulnerable
Ubuntu	gnutls28	pro	`3.5.17-1ubuntu3`	vulnerable
Ubuntu	gnutls28	pro	`3.5.18-1ubuntu1`	vulnerable
Ubuntu	gnutls28	pro	`3.5.18-1ubuntu1.1`	vulnerable
Ubuntu	gnutls28	pro	`3.5.18-1ubuntu1.2`	vulnerable
Ubuntu	gnutls28	pro	`3.5.18-1ubuntu1.3`	vulnerable
Ubuntu	gnutls28	pro	`3.5.18-1ubuntu1.4`	vulnerable
Ubuntu	gnutls28	pro	`3.5.18-1ubuntu1.5`	vulnerable
Ubuntu	gnutls28	pro	`3.5.18-1ubuntu1.6`	vulnerable
Ubuntu	gnutls28	pro	`3.5.18-1ubuntu1.6+esm1`	vulnerable
Ubuntu	gnutls28	pro	`3.5.18-1ubuntu1.6+esm2`	vulnerable
Ubuntu	gnutls28	pro	`3.5.18-1ubuntu1.6+esm3`	vulnerable
Ubuntu	gnutls28	pro	`3.5.18-1ubuntu1.6+esm4`	vulnerable
Suse	gnutls	linux enterprise module for basesystem 15	`3.6.7-6.8.1`	fixed
Suse	gnutls	linux enterprise module for desktop applications 15	`3.6.7-6.8.1`	fixed
Opensuse	gnutls	leap 15.0	`3.6.7-lp150.9.1`	fixed
Suse	gnutls	linux enterprise module for basesystem 15 sp1	`3.6.7-6.11.1`	fixed
Suse	gnutls	linux enterprise module for basesystem 15	`3.6.7-6.11.1`	fixed
Suse	gnutls	linux enterprise module for desktop applications 15	`3.6.7-6.11.1`	fixed
Opensuse	gnutls	leap 15.0	`3.6.7-lp151.2.3.1`	fixed
Opensuse	gnutls	leap 15.1	`3.6.7-lp151.2.3.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	gnutls28	source	sid	`3.6.5-2`	not yet assigned	Not reported	Not reported
Debian	gnutls28	source	forky	`3.6.5-2`	not yet assigned	Not reported	Not reported
Debian	gnutls28	source	trixie	`3.6.5-2`	not yet assigned	Not reported	Not reported
Debian	gnutls28	source	bookworm	`3.6.5-2`	not yet assigned	Not reported	Not reported
Suse	gnutls	rpm	linux enterprise module for basesystem 15	`3.6.7-6.8.1`	Not reported	SUSE-SU-2019:1121-1	Not reported
Suse	gnutls	rpm	linux enterprise module for desktop applications 15	`3.6.7-6.8.1`	Not reported	SUSE-SU-2019:1121-1	Not reported
Opensuse	gnutls	rpm	leap 15.0	`3.6.7-lp150.9.1`	Not reported	OPENSUSE-SU-2019:1353-1	Not reported
Suse	gnutls	rpm	linux enterprise module for basesystem 15 sp1	`3.6.7-6.11.1`	Not reported	SUSE-SU-2019:1351-2	Not reported
Suse	gnutls	rpm	linux enterprise module for basesystem 15	`3.6.7-6.11.1`	Not reported	SUSE-SU-2019:1351-1	Not reported
Suse	gnutls	rpm	linux enterprise module for desktop applications 15	`3.6.7-6.11.1`	Not reported	SUSE-SU-2019:1351-1	Not reported
Opensuse	gnutls	rpm	leap 15.0	`3.6.7-lp151.2.3.1`	Not reported	OPENSUSE-SU-2019:1477-1	Not reported
Opensuse	gnutls	rpm	leap 15.1	`3.6.7-lp151.2.3.1`	Not reported	OPENSUSE-SU-2019:1477-1	Not reported

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[gnutls-bin]Unknown
Source package: [gnutls28]
Details (4)
- 3.7.9-2+deb12u7 · amd64 · bookworm
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · arm64 · bookworm
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · amd64 · bookworm-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · arm64 · bookworm-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
[gnutls-doc]Unknown
Source package: [gnutls28]
Details (4)
- 3.7.9-2+deb12u7 · all · bookworm
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · all · bookworm
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · all · bookworm-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · all · bookworm-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
[guile-gnutls]Unknown
Source package: [gnutls28]
Details (4)
- 3.7.9-2+deb12u7 · amd64 · bookworm
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · arm64 · bookworm
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · amd64 · bookworm-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · arm64 · bookworm-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
[libgnutls28-dev]Unknown
Source package: [gnutls28]
Details (4)
- 3.7.9-2+deb12u7 · amd64 · bookworm
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · arm64 · bookworm
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · amd64 · bookworm-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · arm64 · bookworm-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
[libgnutls30]Unknown
Source package: [gnutls28]
Details (4)
- 3.7.9-2+deb12u7 · amd64 · bookworm
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · arm64 · bookworm
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · amd64 · bookworm-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · arm64 · bookworm-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
[libgnutls-dane0]Unknown
Source package: [gnutls28]
Details (4)
- 3.7.9-2+deb12u7 · amd64 · bookworm
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · arm64 · bookworm
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · amd64 · bookworm-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · arm64 · bookworm-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
[libgnutls-openssl27]Unknown
Source package: [gnutls28]
Details (4)
- 3.7.9-2+deb12u7 · amd64 · bookworm
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · arm64 · bookworm
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · amd64 · bookworm-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · arm64 · bookworm-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
[libgnutlsxx30]Unknown
Source package: [gnutls28]
Details (4)
- 3.7.9-2+deb12u7 · amd64 · bookworm
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · arm64 · bookworm
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · amd64 · bookworm-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12
- 3.7.9-2+deb12u7 · arm64 · bookworm-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · bookworm; dsa · gnutls28 · debian · 12

[Debian 13 (Trixie)]

[gnutls-bin]Unknown
Source package: [gnutls28]
Details (4)
- 3.8.9-3+deb13u4 · amd64 · trixie
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13
- 3.8.9-3+deb13u4 · arm64 · trixie
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13
- 3.8.9-3+deb13u4 · amd64 · trixie-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13
- 3.8.9-3+deb13u4 · arm64 · trixie-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13
[gnutls-doc]Unknown
Source package: [gnutls28]
Details (4)
- 3.8.9-3+deb13u4 · all · trixie
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13
- 3.8.9-3+deb13u4 · all · trixie
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13
- 3.8.9-3+deb13u4 · all · trixie-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13
- 3.8.9-3+deb13u4 · all · trixie-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13
[libgnutls28-dev]Unknown
Source package: [gnutls28]
Details (4)
- 3.8.9-3+deb13u4 · amd64 · trixie
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13
- 3.8.9-3+deb13u4 · arm64 · trixie
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13
- 3.8.9-3+deb13u4 · amd64 · trixie-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13
- 3.8.9-3+deb13u4 · arm64 · trixie-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13
[libgnutls30t64]Unknown
Source package: [gnutls28]
Details (4)
- 3.8.9-3+deb13u4 · amd64 · trixie
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13
- 3.8.9-3+deb13u4 · arm64 · trixie
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13
- 3.8.9-3+deb13u4 · amd64 · trixie-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13
- 3.8.9-3+deb13u4 · arm64 · trixie-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13
[libgnutls-dane0t64]Unknown
Source package: [gnutls28]
Details (4)
- 3.8.9-3+deb13u4 · amd64 · trixie
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13
- 3.8.9-3+deb13u4 · arm64 · trixie
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13
- 3.8.9-3+deb13u4 · amd64 · trixie-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13
- 3.8.9-3+deb13u4 · arm64 · trixie-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13
[libgnutls-openssl27t64]Unknown
Source package: [gnutls28]
Details (4)
- 3.8.9-3+deb13u4 · amd64 · trixie
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13
- 3.8.9-3+deb13u4 · arm64 · trixie
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13
- 3.8.9-3+deb13u4 · amd64 · trixie-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13
- 3.8.9-3+deb13u4 · arm64 · trixie-security
  Fixed · Fixed: 3.6.5-2
  dsa · gnutls28 · debian · 13

Observed: Oct 23, 2026, 5:35:12 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]