SB2018111804 - Buffer over-read in clamav (Alpine package)
Published: November 18, 2018
Security Bulletin ID
SB2018111804
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Buffer over-read (CVE-ID: CVE-2018-15378)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition related to MEW unpacker within the unmew11() function in libclamav/mew.c. A remote attacker can create a specially crafted EXE file, pass it to vulnerable application and trigger invalid memory read.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=5412962cc2f34d4bb2f2996918e1384eda223946
- https://git.alpinelinux.org/aports/commit/?id=b34c6efbc0f5941d4099a372533f14885013e380
- https://git.alpinelinux.org/aports/commit/?id=be88110b3119e3783d97ab6f259ad7b346dc6203
- https://git.alpinelinux.org/aports/commit/?id=fdb3e21e9339a763b32a76726cb3ee43fd4e8772