shadow: Multiple CRLF injections in chfn and chsh
Published Feb 18, 2011
6.4
MEDIUMCVSS 2.0
EPSS 2.31%
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
No data.
No data.
Red Hat Enterprise Linux 5
util-linux
Not affected
Red Hat Enterprise Linux 6
util-linux-ng
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | util-linux | Not affected | n/a |
| Red Hat Enterprise Linux 6 | util-linux-ng | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.31% (0.02309) | 82.75th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.31% (0.02309) | 81.06th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.42% (0.01420) | 78.79th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.64% (0.02641) | 76.16th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.79% (0.00792) | 72.24th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.43% (0.00432) | 75.34th | v3 (v2023.03.01) |
| Mar 6, 2024 | 0.43% (0.00432) | 73.95th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.30% (0.00304) | 68.89th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.30% (0.00304) | 64.94th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.54% (0.01537) | 74.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.54% (0.01537) | 72.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.54% (0.01537) | 51.33th | v2 (v2022.01.01) |
References (15)
- http://osvdb.org/70895 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/42505 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/43345 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.380014 vendor-advisoryx_refsource_SLACKWARE
- http://www.debian.org/security/2011/dsa-2164 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/46426 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/USN-1065-1 vendor-advisoryx_refsource_UBUNTU
- http://www.vupen.com/english/advisories/2011/0396 vdb-entryx_refsource_VUPENVendor Advisory
- http://www.vupen.com/english/advisories/2011/0398 vdb-entryx_refsource_VUPENVendor Advisory
- http://www.vupen.com/english/advisories/2011/0773 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2011-0721 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=678897 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/65564 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2011-0721
- https://www.cve.org/CVERecord?id=CVE-2011-0721
Change history (0)
No recorded changes yet.