OSV-2021-1679 Heap-buffer-overflow in ap_is_chunked
A heap-buffer-overflow in Apache HTTP Server's chunked transfer encoding parser can 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-2021-1679?
OSV-2021-1679 is a memory corruption vulnerability in apache-httpd, published on 13 Dec 2021. 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=42226
Crash type: Heap-buffer-overflow READ 1
Crash state:
ap_is_chunked
fuzz_utils.c
Which versions are affected by OSV-2021-1679?
1 open source package ship an affected version, including apache-httpd.
| Package | Affected | Fixed in |
|---|---|---|
apache-httpd OSS-Fuzz | All versions | None |
How do I fix OSV-2021-1679?
No fix has been published for OSV-2021-1679 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-2021-1679 being exploited?
There is no known exploitation of OSV-2021-1679 in the wild and no public exploit code.