OSV-2023-474 Global-buffer-overflow in xmlDictLookup
A global buffer overflow in the XML dictionary lookup allows attackers to cause denial of service or potentially execute code via crafted XML input.
- 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-2023-474?
OSV-2023-474 is a memory corruption vulnerability in libxml2, published on 10 Jun 2023. 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=59701
Crash type: Global-buffer-overflow READ 1
Crash state:
xmlDictLookup
xmlParseNCName
xmlParseQName
Which versions are affected by OSV-2023-474?
1 open source package ship an affected version, including libxml2.
| Package | Affected | Fixed in |
|---|---|---|
libxml2 OSS-Fuzz | All versions | None |
How do I fix OSV-2023-474?
No fix has been published for OSV-2023-474 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-2023-474 being exploited?
There is no known exploitation of OSV-2023-474 in the wild and no public exploit code.