CVE-2010-2023 Race condition in n/a
Local attackers can exploit a race condition in Exim's appendfile transport to gain privileges or cause denial of service when using world-writable sticky-bit mail directories.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2010-2023?
CVE-2010-2023 is a medium-severity vulnerability in Exim Exim, published on 7 Jun 2010. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
transports/appendfile.c in Exim before 4.72, when a world-writable sticky-bit mail directory is used, does not verify the st_nlink field of mailbox files, which allows local users to cause a denial of service or possibly gain privileges by creating a hard link to another user's file.
Weakness: CWE-362
Which versions are affected by CVE-2010-2023?
It affects 1 product.
Products include Exim Exim.
How do I fix CVE-2010-2023?
Upgrade to a fixed version.
Is CVE-2010-2023 being exploited?
There is no known exploitation of CVE-2010-2023 in the wild and no public exploit code.
Other vulnerabilities in Exim Exim
Sources
Also known as DEBIAN-CVE-2010-2023, GHSA-qrcj-mq48-333m.