Infinite loop in Perl - CVE-2015-8853
Published: December 21, 2016 / Updated: April 24, 2018
Vulnerability identifier: #VU2016
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2015-8853
CWE-ID: CWE-835
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an adjacent attacker to cause DoS condition on the target system.
The weakness exists in the (1) S_reghop3, (2) S_reghop4, and (3) S_reghopmaybe3 functions in regexec.c due to infinite loop. An adjacent attacker can submit specially crafted utf-8 data, as demonstrated by "ax80", and cause the service to crash.
The weakness exists in the (1) S_reghop3, (2) S_reghop4, and (3) S_reghopmaybe3 functions in regexec.c due to infinite loop. An adjacent attacker can submit specially crafted utf-8 data, as demonstrated by "ax80", and cause the service to crash.
Affected software
Perl
Fedora
perl
Fedora
perl
How to mitigate CVE-2015-8853
Update to version 5.24.0.
perl - update to 5.20.3-330.fc22