SB2007061201 - Spoofing attack in c-ares
Published: June 12, 2007 Updated: September 30, 2021
Breakdown by Severity
- Low
- Medium
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- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Use of insufficiently random values (CVE-ID: CVE-2007-3152)
CWE-ID: CWE-330 - Use of Insufficiently Random Values
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to usage of a predictable seed for the random number generator for the DNS Transaction ID field. A remote attacker can spoof DNS responses by guessing the field value.
2) Use of insufficiently random values (CVE-ID: CVE-2007-3153)
CWE-ID: CWE-330 - Use of Insufficiently Random Values
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to usage of a weak facility for producing a random number sequence (Unix rand) within the ares_init:randomize_key() function in c-ares. A remote attacker can spoof DNS responses by guessing certain value.
Remediation
Install update from vendor's website.