Description
Antiword through 0.37 contains a stack out-of-bounds read vulnerability in vGet8PapInfo and vGet8ChrInfo in prop8.c because FKP run counts and grpprl offsets are not bounded. Attackers can supply a crafted .doc file with malicious FKP pages to read past the 512-byte stack buffer, crashing antiword or corrupting style parsing.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Adri van Os | antiword | ≤ 0.37 | — |
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 | antiword | No fix yet | — |
| Debian 13 | antiword | No fix yet | — |
| Debian 12 | antiword | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | antiword | No fix yet | — |
| Ubuntu 26.04 LTS | antiword | No fix yet | — |
| Ubuntu 24.04 LTS | antiword | No fix yet | — |
| Ubuntu 22.04 LTS | antiword | No fix yet | — |
| Ubuntu 20.04 LTS | antiword | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | antiword | No fix yet | — |
| Ubuntu 16.04 LTS | antiword | No fix yet | — |
References
- https://hackmd.io/@haindpwn/antiword-word8-plcflst-count-and-fkp-run-oob-read third-party-advisory
- https://github.com/rsdoiel/antiword/blob/fe4b579067122a2d9d62647efb1ee7cfe3ca92bb/prop8.c#L997-L1022 technical-description
- https://github.com/rsdoiel/antiword/blob/fe4b579067122a2d9d62647efb1ee7cfe3ca92bb/prop8.c#L1461-L1474 technical-description
- VulnCheck Advisory: Antiword through 0.37 Stack Out-of-Bounds Read via prop8.c FKP Parsing third-party-advisory