Double free in GnuTLS - CVE-2019-3829
Published: April 1, 2019
Vulnerability identifier: #VU18107
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2019-3829
CWE-ID: CWE-415
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: GnuTLS
Affected software:
GnuTLS
GnuTLS
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a double free error in the certificate verification API when processing X.509 crtificates. A remote attacker can supply a specially crafted X.509 certificate, trigger double free error and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2019-3829
Install updates from vendor's website.
Sources
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3829
- https://gitlab.com/gnutls/gnutls/issues/694
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L7TJIBRJWGWSH6XIO2MXIQ3W6ES4R6I4/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WRSOL66LHP4SD3Y2ECJDOGT4K663ECDU/
- https://www.gnutls.org/security-new.html#GNUTLS-SA-2019-03-27