CVE-2023-28320 Race condition in https://github.com/curl/curl
A race condition in curl's synchronous resolver can cause crashes in multi-threaded applications using specific build configurations.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-28320?
CVE-2023-28320 is a medium-severity vulnerability in Apple Macos, published on 26 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A denial of service vulnerability exists in curl <v8.1.0 in the way libcurl provides several different backends for resolving host names, selected at build time. If it is built to use the synchronous resolver, it allows name resolves to time-out slow operations using `alarm()` and `siglongjmp()`. When doing this, libcurl used a global buffer that was not mutex protected and a multi-threaded application might therefore crash or otherwise misbehave.
Which versions are affected by CVE-2023-28320?
It affects 8 products.
Products include Apple Macos, Haxx Curl, Netapp Clustered Data Ontap, Netapp H300s Firmware, Netapp H410s Firmware, Netapp H500s Firmware and 2 more.
How do I fix CVE-2023-28320?
Upgrade to a fixed version.
Is CVE-2023-28320 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-28320 exists.
Other vulnerabilities in Apple Macos
Sources
Also known as ALPINE-CVE-2023-28320, AZL-26790, AZL-26793, AZL-26809, AZL-26813, AZL-34605 and 6 more.