SB2020042940 - Use-after-free in samba (Alpine package)
Published: April 29, 2020
Security Bulletin ID
SB2020042940
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2020-10700)
The vulnerability allows a remote attacker to perform a denial of service attack.
The vulnerability exists due to a use-after-free error when Paged results control is combined with ASQ control while performing search operations. A remote authenticated user can send a specially crafted LDAP search query, trigger a use-after-free error and perform a denial of service attack.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=b430c8e9b07545e7ad2ecf2a3776a51ce0c28b45
- https://git.alpinelinux.org/aports/commit/?id=218049ea4e079bdab8556dc80287273eb93f90f1
- https://git.alpinelinux.org/aports/commit/?id=1e7e09895fd7887b6fba58b013e2f31f14e7afea
- https://git.alpinelinux.org/aports/commit/?id=869dcbdc20fc7828503abbd281f7335db7ec4fc8