Off-by-one error in Compress::Raw::Zlib - CVE-2009-1391
Published: March 24, 2017
Vulnerability identifier: #VU6170
CSH Severity: Critical
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red
CVE-ID: CVE-2009-1391
CWE-ID: CWE-193
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: Perl
Affected software:
Compress::Raw::Zlib
Compress::Raw::Zlib
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to off-by-one error in Zlib.xs in Compress::Raw::Zlib Perl module before 2.017 when processing specially crafted zlib archives. A remote attacker can pass a specially crafted zlib archive to vulnerable application, trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation may allow an attacker to compromise vulnerable system.
Note: this vulnerability is being actively exploited in the wild against AMaViS and SpamAssassin, which use vulnerable Perl module.
The vulnerability exists due to off-by-one error in Zlib.xs in Compress::Raw::Zlib Perl module before 2.017 when processing specially crafted zlib archives. A remote attacker can pass a specially crafted zlib archive to vulnerable application, trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation may allow an attacker to compromise vulnerable system.
Note: this vulnerability is being actively exploited in the wild against AMaViS and SpamAssassin, which use vulnerable Perl module.
How to mitigate CVE-2009-1391
Update Compress::Raw::Zlib Perl module to version 2.017.