OSV-2021-454 Heap-buffer-overflow in irc_parse_message_tags
A heap-buffer-overflow in the IRC message tag parser allows attackers to cause crashes or potentially execute code via crafted network messages.
- 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-2021-454?
OSV-2021-454 is a memory corruption vulnerability in irssi, published on 28 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=31443
Crash type: Heap-buffer-overflow READ 8
Crash state:
irc_parse_message_tags
irc_server_event_tags
signal_emit_real
Which versions are affected by OSV-2021-454?
1 open source package ship an affected version, including irssi.
| Package | Affected | Fixed in |
|---|---|---|
irssi OSS-Fuzz | All versions | None |
How do I fix OSV-2021-454?
No fix has been published for OSV-2021-454 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-2021-454 being exploited?
There is no known exploitation of OSV-2021-454 in the wild and no public exploit code.