OSV-2020-1623 Heap-use-after-free in xmlXIncludeIncludeNode
A heap-use-after-free vulnerability in libxml2's XInclude processing allows attackers to cause denial of service or potentially execute arbitrary code.
- 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-2020-1623?
OSV-2020-1623 is an use after free vulnerability in libxml2, published on 16 Aug 2020. 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=24925
Crash type: Heap-use-after-free READ 4
Crash state:
xmlXIncludeIncludeNode
xmlXIncludeDoProcess
xmlXIncludeLoadFallback
Which versions are affected by OSV-2020-1623?
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-2020-1623?
No fix has been published for OSV-2020-1623 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-2020-1623 being exploited?
There is no known exploitation of OSV-2020-1623 in the wild and no public exploit code.