Description
Double free vulnerability in the gnutls_x509_ext_import_proxy function in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allows remote attackers to have unspecified impact via crafted policy language information in an X.509 certificate with a Proxy Certificate Information extension.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | gnutls28 | 3.5.8-1 | — |
| Debian 13 | gnutls28 | 3.5.8-1 | — |
| Debian 12 | gnutls28 | 3.5.8-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | gnutls28 | 3.4.10-4ubuntu1.2 | USN-3183-1 |
| Ubuntu 14.04 LTS | gnutls26 | 2.12.23-12ubuntu2.6 | USN-3183-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | gnutls +4 | 3.3.26-9.el7 | RHSA-2017:2292 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | gnutls +4 | 3.3.26-9.el7 | ELSA-2017-2292 |
Advisories 5
- RHSA-2017:2292 Red Hat Security Advisory: gnutls security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-3183-1 gnutls26, gnutls28 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- VDE-2019-009 PHOENIX CONTACT: Multiple Vulnerabilities in AXC F 2152 CERT@VDE · May 22, 2025
- ICSA-19-155-01 PHOENIX CONTACT PLCNext AXC F 2152 CISA ICS & IT advisories · Jun 4, 2019
- ELSA-2017-2292 Moderate: gnutls security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 7, 2017
References
- [oss-security] 20170110 CVE request: two advisories for GnuTLS GNUTLS-SA-2017-1, GNUTLS-SA-2017-2, fixed in 3.3.26, 3.5.8 mailing-list
- RHSA-2017:2292 vendor-advisory
- 1037576 vdb-entry
- [oss-security] 20170110 Re: CVE request: two advisories for GnuTLS GNUTLS-SA-2017-1, GNUTLS-SA-2017-2, fixed in 3.3.26, 3.5.8 mailing-list
- https://gnutls.org/security.html#GNUTLS-SA-2017-1
- openSUSE-SU-2017:0386 vendor-advisory
- 95370 vdb-entry
- GLSA-201702-04 vendor-advisory
- https://gitlab.com/gnutls/gnutls/commit/c5aaa488a3d6df712dc8dff23a049133cab5ec1b