CVE-2022-2809 Unauthenticated out of bounds heap write in bmcweb
An attacker can cause denial of service in OpenBMC by sending malformed HTTP headers that trigger a heap buffer overflow.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-2809?
CVE-2022-2809 is a high-severity memory corruption vulnerability in OpenBMC, published on 27 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in bmcweb of OpenBMC Project allows user to cause denial of service. When fuzzing the multipart_parser code using AFL++ with address sanitizer enabled to find smallest memory corruptions possible. It detected problem in how multipart_parser handles unclosed http headers. If long enough http header is passed in the multipart form without colon there is one byte overwrite on heap. It can be conducted multiple times in a loop to cause DoS.
Which versions are affected by CVE-2022-2809?
It affects 1 product.
Products include Openbmc-Project Openbmc.
How do I fix CVE-2022-2809?
No fix has been published for CVE-2022-2809 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 CVE-2022-2809 being exploited?
There is no known exploitation of CVE-2022-2809 in the wild and no public exploit code.