OSV-2020-2008 UNKNOWN WRITE in wolfCrypt_custom_free
A memory corruption vulnerability in wolfSSL's Diffie-Hellman key exchange allows attackers to cause crashes 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-2020-2008?
OSV-2020-2008 is a memory corruption vulnerability in wolfssl, published on 10 Oct 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=26214
Crash type: UNKNOWN WRITE
Crash state:
wolfCrypt_custom_free
wolfSSL_Free
GetDhPublicKey
Which versions are affected by OSV-2020-2008?
1 open source package ship an affected version, including wolfssl.
| Package | Affected | Fixed in |
|---|---|---|
wolfssl OSS-Fuzz | All versions | None |
How do I fix OSV-2020-2008?
No fix has been published for OSV-2020-2008 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-2020-2008 being exploited?
There is no known exploitation of OSV-2020-2008 in the wild and no public exploit code.