Vulnerability · Published Jul 20, 2021 · Assigned by mitre
CVE-2021-36978
Medium 5.5
In plain English
A medium-severity security flaw in the qpdf package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 70% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)1.3%top 30.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
QPDF 9.x through 9.1.1 and 10.x through 10.0.4 has a heap-based buffer overflow in Pl_ASCII85Decoder::write (called from Pl_AES_PDF::flush and Pl_AES_PDF::finish) when a certain downstream write fails.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | qpdf | 10.1.0-1 | DEBIAN-CVE-2021-36978 |
| Debian:13 | qpdf | 10.1.0-1 | DEBIAN-CVE-2021-36978 |
| Debian:14 | qpdf | 10.1.0-1 | DEBIAN-CVE-2021-36978 |
Affected products (as reported)
References
- https://github.com/qpdf/qpdf/issues/492
- https://github.com/qpdf/qpdf/commit/dc92574c10f3e2516ec6445b88c5d584f40df4e5
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/qpdf/OSV-2020-2245.yaml
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28262
- [debian-lts-announce] 20230829 [SECURITY] [DLA 3548-1] qpdf security update mailing-list
- GLSA-202401-20 vendor-advisory