CVE-2021-3998 Information disclosure in glibc
A flaw in glibc's realpath function may leak sensitive data, requiring OS and library updates to prevent information disclosure.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-3998?
CVE-2021-3998 is a high-severity vulnerability in Gnu Glibc, published on 24 Aug 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw was found in glibc. The realpath() function can mistakenly return an unexpected value, potentially leading to information leakage and disclosure of sensitive data.
Which versions are affected by CVE-2021-3998?
It affects 7 products.
Products include Gnu Glibc, Netapp H300s Firmware, Netapp H410c Firmware, Netapp H410s Firmware, Netapp H500s Firmware, Netapp H700s Firmware and 1 more.
How do I fix CVE-2021-3998?
Apply the vendor's patch.
Is CVE-2021-3998 being exploited?
There is no known exploitation of CVE-2021-3998 in the wild and no public exploit code.
Other vulnerabilities in Gnu Glibc
Sources
Also known as AZL-10675, DEBIAN-CVE-2021-3998, GHSA-32pr-wg5j-9rwr, MINI-7whw-ch8g-2hh3.