OSV-2018-40 UNKNOWN READ in ftp_disconnect
An unknown read error in cURL's FTP disconnect logic can cause a crash, leading to denial of service for applications using the library.
- 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-2018-40?
OSV-2018-40 is a memory corruption vulnerability in curl, published on 13 Jan 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=12173
Crash type: UNKNOWN READ
Crash state:
ftp_disconnect
Curl_disconnect
ConnectionExists
Which versions are affected by OSV-2018-40?
1 open source package ship an affected version, including curl.
| Package | Affected | Fixed in |
|---|---|---|
curl OSS-Fuzz | All versions | None |
How do I fix OSV-2018-40?
No fix has been published for OSV-2018-40 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-2018-40 being exploited?
There is no known exploitation of OSV-2018-40 in the wild and no public exploit code.