CVE-2018-18661: Null Pointer Dereference
An issue was discovered in LibTIFF 4.0.9. There is a NULL pointer dereference in the function LZWDecode in the file tiflzw.c.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/tiffto a version that resolves this vulnerability.Fixed in 4.2.0-1+deb11u5Fixed in 4.2.0-1+deb11u8Fixed in 4.5.0-6+deb12u4Fixed in 4.7.0-3+deb13u2Fixed in 4.7.0-3+deb13u3Fixed in 4.7.2-1 - Upgrade
Upgrade
libtiffto a version that resolves this vulnerability.Fixed in 4.0.9Patch 99b10edde9a0fc28cc0e7b7757aa18ac4c8c225f
Event History
Frequently Asked Questions
What is the severity of CVE-2018-18661?
CVE-2018-18661 has a medium severity due to the potential for a denial of service through NULL pointer dereference.
How do I fix CVE-2018-18661?
To mitigate CVE-2018-18661, upgrade to LibTIFF version 4.2.0-1+deb11u5 or later for Debian systems.
What software is affected by CVE-2018-18661?
CVE-2018-18661 affects LibTIFF version 4.0.9 as well as various versions of the tiff package in Debian and Ubuntu Linux.
What type of vulnerability is CVE-2018-18661?
CVE-2018-18661 is a NULL pointer dereference vulnerability found in the LZWDecode function of LibTIFF.
Can CVE-2018-18661 lead to system compromise?
CVE-2018-18661 is primarily a denial of service vulnerability and does not directly lead to remote code execution or system compromise.