Out-of-bounds read in ClamAV - CVE-2020-3123
Published: February 6, 2020
Vulnerability identifier: #VU25015
CSH Severity: Medium
CVSS v4: 8.7 [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]
CVE-ID: CVE-2020-3123
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition in the Data-Loss-Prevention (DLP) module in Clam AntiVirus (ClamAV) with enabled optional DLP feature. A remote attacker can send a specially crafted email to the affected system, trigger an out-of-bounds read error and crash the ClamAV process.
Affected software
ClamAV
Arch Linux
Gentoo Linux
busybox (Alpine package)
clamav (Ubuntu package)
clamav (Alpine package)
firefox-esr (Alpine package)
RSA Authentication Manager
Arch Linux
Gentoo Linux
busybox (Alpine package)
clamav (Ubuntu package)
clamav (Alpine package)
firefox-esr (Alpine package)
RSA Authentication Manager
How to mitigate CVE-2020-3123
Install update from vendor's website.
ClamAV - update to 0.102.2
clamav (Ubuntu package) - addressed in versions 0.102.2+dfsg-0ubuntu0.16.04.1, 0.102.2+dfsg-0ubuntu0.18.04.1, 0.102.2+dfsg-0ubuntu0.19.10.1
clamav (Alpine package) - update to 0.102.3-r0
RSA Authentication Manager - update to 8.5 Patch 3
clamav (Ubuntu package) - addressed in versions 0.102.2+dfsg-0ubuntu0.16.04.1, 0.102.2+dfsg-0ubuntu0.18.04.1, 0.102.2+dfsg-0ubuntu0.19.10.1
clamav (Alpine package) - update to 0.102.3-r0
RSA Authentication Manager - update to 8.5 Patch 3
External References
Related Security Bulletins
- Denial of service in ClamAV DLP module
- Ubuntu update for ClamAV
- Gentoo update for ClamAV
- Arch Linux update for clamav
- Out-of-bounds read in clamav (Alpine package)
- Out-of-bounds read in busybox (Alpine package)
- Out-of-bounds read in firefox-esr (Alpine package)
- RSA Authentication Manager update for third-party components