What’s Vulnerable › Vulnerabilities

CVE-2011-0721

• Severity: medium (CVSS 6.4 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2011-02-19 · updated 2026-06-16
• Weakness: CWE-20

Description

Multiple CRLF injection vulnerabilities in (1) chfn and (2) chsh in shadow 1:4.1.4 allow local users to add new users or groups to /etc/passwd via the GECOS field.

Affected products

• Debian Shadow: 1:4.1.4

References

• http://osvdb.org/70895
• http://secunia.com/advisories/42505
• http://secunia.com/advisories/43345
• http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.380014
• http://www.debian.org/security/2011/dsa-2164
• http://www.securityfocus.com/bid/46426
• http://www.ubuntu.com/usn/USN-1065-1
• http://www.vupen.com/english/advisories/2011/0396
• http://www.vupen.com/english/advisories/2011/0398
• http://www.vupen.com/english/advisories/2011/0773
• https://exchange.xforce.ibmcloud.com/vulnerabilities/65564
• http://osvdb.org/70895

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