PT-2011-2584 · Gnu · Shadow

Kees Cook · Published 2011-02-18 · Updated 2017-08-17 · CVE-2011-0721

Positive Technologies (AI Summary)

CVSS v2.0

6.4

Medium

Base vector

AV:N/AC:L/Au:N/C:N/I:P/A:P

Name of the Vulnerable Software and Affected Versions shadow version 1:4.1.4

Description The issue concerns CRLF injection vulnerabilities in the chfn and chsh utilities within the shadow package. This allows local users to modify the /etc/passwd file by adding new users or groups via the GECOS field.

Recommendations For shadow version 1:4.1.4, consider restricting access to the chfn and chsh utilities until a patch is available. As a temporary workaround, avoid using the GECOS field in the chfn and chsh utilities to minimize the risk of exploitation.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2011-0721

DSA-2164-1

Affected Products

Shadow

References · 15

• http://debian.org/security/2011/dsa-2164 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2011-0721 · Security Note
• http://vupen.com/english/advisories/2011/0396 · Vendor Advisory
• http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.380014 · Vendor Advisory
• http://secunia.com/advisories/43345 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2011-0721 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2011-0721 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2011-0721 · Vendor Advisory
• http://vupen.com/english/advisories/2011/0398 · Vendor Advisory
• http://secunia.com/advisories/42505 · Vendor Advisory
• http://ubuntu.com/usn/USN-1065-1 · Vendor Advisory
• http://securityfocus.com/bid/46426 · Note
• http://osvdb.org/70895 · Note
• https://exchange.xforce.ibmcloud.com/vulnerabilities/65564 · Note
• http://vupen.com/english/advisories/2011/0773 · Note