SB2017052322 - Denial of service in Zlib
Published: May 23, 2017 Updated: February 27, 2025
Security Bulletin ID
SB2017052322
Severity
Low
Patch available
YES
Number of vulnerabilities
4
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Denial of service (CVE-ID: CVE-2016-9841)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists in zlib due to out-of-bounds pointer arithmetic in inftrees.c. A remote attacker can cause the application to crash.
Successful exploitation of the vulnerability results in denial of service.
2) Denial of service (CVE-ID: CVE-2016-9840)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists in zlib due to out-of-bounds pointer arithmetic in inftrees.c. A remote attacker can send a specially crafted document, trick the victim into opening it, and cause the application to crash.
Successful exploitation of the vulnerability results in denial of service.
3) Denial of service (CVE-ID: CVE-2016-9842)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists in zlib due to an undefined left shift of negative number. A remote attacker can send a specially crafted document, trick the victim into opening it, and cause the application to crash.
Successful exploitation of the vulnerability results in denial of service.
4) Denial of service (CVE-ID: CVE-2016-9843)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists in zlib due to big-endian out-of-bounds pointer. A remote attacker can send a specially crafted document, trick the victim into opening it, and cause the application to crash.
Successful exploitation of the vulnerability results in denial of service.
Remediation
Install update from vendor's website.
References
- https://github.com/madler/zlib/commit/9aaec95e82117c1cb0f9624264c3618fc380cecb
- https://bugzilla.redhat.com/show_bug.cgi?id=1402346
- https://github.com/madler/zlib/commit/6a043145ca6e9c55184013841a67b2fef87e44c0
- https://bugzilla.redhat.com/show_bug.cgi?id=1402345
- https://github.com/madler/zlib/commit/e54e1299404101a5a9d0cf5e45512b543967f958
- https://bugzilla.redhat.com/show_bug.cgi?id=1402348
- http://aix.software.ibm.com/aix/efixes/security/java_apr2017_advisory.asc