OSV-2020-2245 Heap-buffer-overflow in Pl_ASCII85Decoder::write
A heap buffer overflow in the ASCII85 decoder allows attackers to execute arbitrary code or cause denial of service via malicious PDF files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is OSV-2020-2245?
OSV-2020-2245 is a memory corruption vulnerability in qpdf, published on 6 Dec 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28262
Crash type: Heap-buffer-overflow WRITE 1
Crash state:
Pl_ASCII85Decoder::write
Pl_AES_PDF::flush
Pl_AES_PDF::finish
Which versions are affected by OSV-2020-2245?
1 open source package ship an affected version, including qpdf.
| Package | Affected | Fixed in |
|---|---|---|
qpdf OSS-Fuzz | All versions | None |
How do I fix OSV-2020-2245?
No fix has been published for OSV-2020-2245 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is OSV-2020-2245 being exploited?
There is no known exploitation of OSV-2020-2245 in the wild and no public exploit code.