OSV-2021-343 Heap-use-after-free in sctp_sorecvmsg
A heap-use-after-free vulnerability in the usrsctp library allows remote attackers to cause a denial of service or potentially execute arbitrary code via crafted SCTP packets.
- 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-2021-343?
OSV-2021-343 is an use after free vulnerability in usrsctp, published on 10 Feb 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=30571
Crash type: Heap-use-after-free READ 8
Crash state:
sctp_sorecvmsg
usrsctp_recvv
handle_upcall
Which versions are affected by OSV-2021-343?
1 open source package ship an affected version, including usrsctp.
| Package | Affected | Fixed in |
|---|---|---|
usrsctp OSS-Fuzz | All versions | None |
How do I fix OSV-2021-343?
No fix has been published for OSV-2021-343 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is OSV-2021-343 being exploited?
There is no known exploitation of OSV-2021-343 in the wild and no public exploit code.