OSV-2022-320 Heap-buffer-overflow in lwan_h2_huffman_decode_for_fuzzing
A heap buffer overflow in the Lwan web server's HTTP/2 Huffman decoder allows remote attackers to cause a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2022-320?
OSV-2022-320 is a memory corruption vulnerability in lwan, published on 9 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=46506
Crash type: Heap-buffer-overflow READ 8
Crash state:
lwan_h2_huffman_decode_for_fuzzing
h2_huffman_fuzzer.cc
Which versions are affected by OSV-2022-320?
1 open source package ship an affected version, including lwan.
| Package | Affected | Fixed in |
|---|---|---|
lwan OSS-Fuzz | All versions | None |
How do I fix OSV-2022-320?
No fix has been published for OSV-2022-320 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-2022-320 being exploited?
There is no known exploitation of OSV-2022-320 in the wild and no public exploit code.