Description
ClamAV versions prior to 0.103.0-rc contain a vulnerability in function name processing through the ClamBC bytecode interpreter that allows attackers to manipulate bytecode function names. Attackers can exploit the weak input validation in function name encoding to potentially execute malicious bytecode or cause unexpected behavior in the ClamAV engine.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| ClamAV | ClamBC | < 0.103.0-rc | 0.103.0-rc |
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 | 0.103.0+dfsg-1 | — |
| Debian 13 | clamav | 0.103.0+dfsg-1 | — |
| Debian 12 | clamav | 0.103.0+dfsg-1 | — |