What’s Vulnerable › Vulnerabilities

CVE-2007-3153

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2007-06-11 · updated 2026-06-16

Description

The ares_init:randomize_key function in c-ares, on platforms other than Windows, uses a weak facility for producing a random number sequence (Unix rand), which makes it easier for remote attackers to spoof DNS responses by guessing certain values.

Affected products

• Daniel Stenberg C-Ares: 1.0, 1.1, 1.2, 1.2.1, 1.3, 1.3.1 (+1)

References

• http://cool.haxx.se/cvs.cgi/curl/ares/CHANGES?rev=HEAD&content-type=text/vnd.viewcvs-markup
• http://osvdb.org/37172
• http://www.securityfocus.com/bid/24386
• https://exchange.xforce.ibmcloud.com/vulnerabilities/34980
• http://cool.haxx.se/cvs.cgi/curl/ares/CHANGES?rev=HEAD&content-type=text/vnd.viewcvs-markup
• http://osvdb.org/37172
• http://www.securityfocus.com/bid/24386
• https://exchange.xforce.ibmcloud.com/vulnerabilities/34980

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