SB2011112202 - Heap-based buffer overflow in openldap (Alpine package)

Description

This security bulletin contains information about 1 vulnerability.

1) Heap-based buffer overflow (CVE-ID: CVE-2011-4079)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in Off-by-one error in the UTF8StringNormalize function in OpenLDAP 2.4.26 and earlier. A remote attacker can use a zero-length string that triggers a heap-based buffer overflow to trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install update from vendor's website.

References

• https://git.alpinelinux.org/aports/commit/?id=4beef45c542d4702324c00daa8516d3299079505
• https://git.alpinelinux.org/aports/commit/?id=213618cf142b36dbc0c2d5acf96b68c64aa42cb6
• https://git.alpinelinux.org/aports/commit/?id=1c762bb7d22d5bf38f9a64ebce429f6a2b76407f