Stack-based buffer overflow - CVE-2015-3217
Published: December 13, 2016 / Updated: August 4, 2020
Vulnerability identifier: #VU33648
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2015-3217
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor:
Affected software:
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing a crafted regular expression, as demonstrated by /^(?:(?(1)\.|([^\\W_])?)+)+$/. A remote unauthenticated attacker can trigger stack-based buffer overflow 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-2015-3217
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
Sources
- http://rhn.redhat.com/errata/RHSA-2016-1025.html
- http://rhn.redhat.com/errata/RHSA-2016-2750.html
- http://vcs.pcre.org/pcre?view=revision&revision=1566
- http://www.openwall.com/lists/oss-security/2015/06/03/7
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- http://www.securityfocus.com/bid/75018
- http://www-01.ibm.com/support/docview.wss?uid=isg3T1023886
- https://access.redhat.com/errata/RHSA-2016:1132
- https://bugs.exim.org/show_bug.cgi?id=1638
- https://bugzilla.redhat.com/show_bug.cgi?id=1228283