SB2018113015 - Null pointer dereference in tiff (Alpine package)
Published: November 30, 2018
Security Bulletin ID
SB2018113015
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Null pointer dereference (CVE-ID: CVE-2018-18661)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to NULL pointer dereference in the function LZWDecode in the file tif_lzw.c. A remote attacker can trick the victim into opening a specially crafted input, trigger NULL pointer dereference and cause the service to crash.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=0c504ed6ce49ffab8f4090a5a3ddaeeda27ecbf5
- https://git.alpinelinux.org/aports/commit/?id=42e3145e0c57d0a2e3c2717842ae6cfa41e3a03e
- https://git.alpinelinux.org/aports/commit/?id=e3af38305d3f591e839e6e77fce5cbbb19c1dc9f
- https://git.alpinelinux.org/aports/commit/?id=fc22ab4fd31b719b3fe5a77dbe226c306e94d888