Description
ClamAV versions prior to 0.101.3 are susceptible to a zip bomb vulnerability where an unauthenticated attacker can cause a denial of service condition by sending crafted messages to an affected system.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Cisco | ClamAV | unspecified – < 0.101.3 | 0.101.3 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | clamav | 0.101.4+dfsg-1 | — |
| Debian 13 | clamav | 0.101.4+dfsg-1 | — |
| Debian 12 | clamav | 0.101.4+dfsg-1 | — |
| Debian 8 | clamav | 0.101.4+dfsg-0+deb8u1 | DLA-1953-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | clamav | 0.101.4+dfsg-0ubuntu0.18.04.1 | USN-4146-1 |
| Ubuntu 16.04 LTS | clamav | 0.101.4+dfsg-0ubuntu0.16.04.1 | USN-4146-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | clamav | 0.101.4+dfsg-0ubuntu0.14.04.1+esm1 | USN-4146-2 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP2 | clamav | 0.103.0-3.23.1 | SUSE-SU-2020:3790-1 |
| SLES 15 SP1 | clamav | 0.100.3-3.14.1 | SUSE-SU-2020:3790-1, SUSE-SU-2019:3053-1 |
| SLES 15 | clamav | 0.100.3-3.14.1 | SUSE-SU-2019:3053-1 |
| SLES 12 SP5 | clamav | 0.103.0-3.3.1 | SUSE-SU-2020:3729-1 |
| SLES 12 SP4 | clamav | 0.100.3-33.26.1 | SUSE-SU-2019:3066-1 |
Show 15 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | clamav | 0.100.3-33.26.1 | SUSE-SU-2019:3066-1 |
| SLES 12 SP2 | clamav | 0.100.3-33.26.1 | SUSE-SU-2019:3066-1 |
| SLES 12 SP1 | clamav | 0.100.3-33.26.1 | SUSE-SU-2019:3066-1 |
| SLES 11 SP4 | clamav | 0.100.3-0.20.26.1 | SUSE-SU-2019:14231-1 |
| SLES for SAP 12 SP5 | clamav | 0.103.0-3.3.1 | SUSE-SU-2020:3729-1 |
| SLES for SAP 12 SP4 | clamav | 0.100.3-33.26.1 | SUSE-SU-2019:3066-1 |
| SLES for SAP 12 SP3 | clamav | 0.100.3-33.26.1 | SUSE-SU-2019:3066-1 |
| SLES for SAP 12 SP2 | clamav | 0.100.3-33.26.1 | SUSE-SU-2019:3066-1 |
| SLES for SAP 12 SP1 | clamav | 0.100.3-33.26.1 | SUSE-SU-2019:3066-1 |
| SUSE OpenStack Cloud Crowbar 8 | clamav | 0.100.3-33.26.1 | SUSE-SU-2019:3066-1 |
| SUSE OpenStack Cloud 8 | clamav | 0.100.3-33.26.1 | SUSE-SU-2019:3066-1 |
| SUSE OpenStack Cloud 7 | clamav | 0.100.3-33.26.1 | SUSE-SU-2019:3066-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | clamav | 0.100.3-0.20.26.1 | SUSE-SU-2019:14231-1 |
| SUSE HPE Helion OpenStack 8 | clamav | 0.100.3-33.26.1 | SUSE-SU-2019:3066-1 |
| SUSE Enterprise Storage 5 | clamav | 0.100.3-33.26.1 | SUSE-SU-2019:3066-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | clamav | 0.103.3-1.4 | openSUSE-SU-2024:10685-1 |
| openSUSE Leap 15.2 | clamav | 0.103.0-lp152.6.3.1 | openSUSE-SU-2020:2276-1 |
| openSUSE Leap 15.1 | clamav | 0.100.3-lp151.2.3.1 | openSUSE-SU-2020:2268-1, openSUSE-SU-2019:2595-1 |
| openSUSE Leap 15.0 | clamav | 0.100.3-lp150.2.13.1 | openSUSE-SU-2019:2597-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | clamav | 0.101.4-r0 | — |
| Alpine v3.23 | clamav | 0.101.4-r0 | — |
| Alpine v3.22 | clamav | 0.101.4-r0 | — |
| Alpine v3.21 | clamav | 0.101.4-r0 | — |
| Alpine v3.20 | clamav | 0.101.4-r0 | — |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | clamav | 0.101.4-r0 | — |
| Alpine v3.18 | clamav | 0.101.4-r0 | — |
| Alpine v3.17 | clamav | 0.101.4-r0 | — |
| Alpine v3.16 | clamav | 0.101.4-r0 | — |
| Alpine v3.15 | clamav | 0.101.4-r0 | — |
| Alpine v3.14 | clamav | 0.101.4-r0 | — |
| Alpine v3.13 | clamav | 0.101.4-r0 | — |
| Alpine v3.12 | clamav | 0.101.4-r0 | — |
Advisories 13
- USN-4146-2 clamav vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-4146-1 clamav vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-1953-1 clamav - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2020:2276-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:2268-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:3053-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3790-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10685-1 clamav-0.103.3-1.4 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:14231-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:3066-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:2597-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:2595-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3729-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://blog.clamav.net/2019/08/clamav-01014-security-patch-release-has.html
- openSUSE-SU-2019:2595 vendor-advisory
- openSUSE-SU-2019:2597 vendor-advisory