OSV-2020-462 Global-buffer-overflow in strsep_char
A global buffer overflow in the HTTP proxy protocol parser allows remote attackers to cause a denial of service via crafted requests.
- 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-2020-462?
OSV-2020-462 is a memory corruption vulnerability in lwan, published on 1 Jul 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=14509
Crash type: Global-buffer-overflow READ {*}
Crash state:
strsep_char
parse_proxy_protocol_v1
parse_http_request
Which versions are affected by OSV-2020-462?
1 open source package ship an affected version, including lwan.
| Package | Affected | Fixed in |
|---|---|---|
lwan OSS-Fuzz | All versions | None |
How do I fix OSV-2020-462?
No fix has been published for OSV-2020-462 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-2020-462 being exploited?
There is no known exploitation of OSV-2020-462 in the wild and no public exploit code.