Vulnerability · Published Oct 27, 2022 · Assigned by OpenBMC

CVE-2022-2809Unauthenticated out of bounds heap write in bmcweb

High 8.2

In plain English

A high-severity heap buffer overflow in OpenBMC from OpenBMC Project. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 56% of all known vulnerabilities).

Severity (CVSS 3.1)8.2High

Exploit odds (30 days)0.8%top 44.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
OpenBMC Project	OpenBMC	2.10 – before Release*

Weakness: CWE-229, CWE-122 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

References

https://github.com/openbmc/bmcweb