Double free in Gnu - CVE-2017-5334
Published: August 2, 2017
Vulnerability identifier: #VU7656
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-5334
CWE-ID: CWE-415
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote unauthenticated attacker to cause DoS condition on the target system.
The weakness exists due to insufficient validation of user-supplied input by the gnutls_x509_ext_import_proxy function. A remote attacker can send a specially crafted X.509 certificate with Proxy Certificate Information extension present, trigger double free error and cause the application to crash.
Successful exploitation of the vulnerability results in denial of service.
The weakness exists due to insufficient validation of user-supplied input by the gnutls_x509_ext_import_proxy function. A remote attacker can send a specially crafted X.509 certificate with Proxy Certificate Information extension present, trigger double free error and cause the application to crash.
Successful exploitation of the vulnerability results in denial of service.
Affected software
Gnu
Gentoo Linux
Fedora
Red Hat Enterprise Linux Server
Ubuntu
Slackware Linux
gnutls
gnutls30
Gentoo Linux
Fedora
Red Hat Enterprise Linux Server
Ubuntu
Slackware Linux
gnutls
gnutls30
How to mitigate CVE-2017-5334
Update to version 3.3.26 or 3.5.8.
gnutls - update to 3.4.17-2.fc24
gnutls30 - update to 3.5.8-1.el6
gnutls30 - update to 3.5.8-1.el6