perl: lc(), uc() routines are laundering tainted data
Published Apr 11, 2011
5.0
MEDIUMCVSS 2.0
EPSS 10.58%
Description
The (1) lc, (2) lcfirst, (3) uc, and (4) ucfirst functions in Perl 5.10.x, 5.11.x, and 5.12.x through 5.12.3, and 5.13.x through 5.13.11, do not apply the taint attribute to the return value upon processing tainted input, which might allow context-dependent attackers to bypass the taint protection mechanism via a crafted string.
Affected products
No data.
Configuration 1
Configuration 2
- 5.13.0
- 5.13.1
- 5.13.2
- 5.13.3
- 5.13.4
- 5.13.5
- 5.13.6
- 5.13.7
- 5.13.8
- 5.13.9
- 5.13.10
- 5.13.11
Configuration 3
Configuration 4
- 5.12.0
- 5.12.0
- 5.12.0
- 5.12.0
- 5.12.0
- 5.12.0
- 5.12.0
- 5.12.1
- 5.12.1
- 5.12.1
- 5.12.2
- 5.12.2
- 5.12.3
- 5.12.3
- 5.12.3
- 5.12.3
No data.
Red Hat Enterprise Linux 6
perl-4:5.10.1-119.el6
Fixed · RHSA-2011:0558
Red Hat Enterprise Linux 4
perl
Not affected
Red Hat Enterprise Linux 5
perl
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | perl-4:5.10.1-119.el6 | Fixed | RHSA-2011:0558 |
| Red Hat Enterprise Linux 4 | perl | Not affected | n/a |
| Red Hat Enterprise Linux 5 | perl | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
The Red Hat Security Response Team has rated this issue as having low security impact, and it did not affect the versions of perl as shipped with Red Hat Enterprise Linux 4 and 5. A future update in Red Hat Enterprise Linux 6 may address this flaw.
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:N
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 (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 10.58% (0.10580) | 95.65th | v5 (v2026.06.15) |
| Sep 8, 2026 | 10.58% (0.10580) | 95.48th | v5 (v2026.06.15) |
| Jun 15, 2026 | 8.71% (0.08712) | 94.44th | v5 (v2026.06.15) |
| Jul 29, 2025 | 4.50% (0.04504) | 88.66th | v4 (v2025.03.14) |
| Mar 30, 2025 | 5.59% (0.05592) | 89.36th | v4 (v2025.03.14) |
| Mar 29, 2025 | 9.02% (0.09020) | 87.57th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.59% (0.05592) | 89.62th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.70% (0.01698) | 88.25th | v3 (v2023.03.01) |
| Jul 17, 2024 | 1.70% (0.01698) | 87.91th | v3 (v2023.03.01) |
| Apr 30, 2023 | 1.70% (0.01698) | 85.91th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.67% (0.01673) | 85.67th | v3 (v2023.03.01) |
| Mar 6, 2023 | 12.57% (0.12567) | 95.52th | v2 (v2022.01.01) |
| Apr 1, 2022 | 12.57% (0.12567) | 95.18th | v2 (v2022.01.01) |
| Feb 4, 2022 | 12.57% (0.12567) | 90.03th | v2 (v2022.01.01) |
References (18)
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/057891.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/057971.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-security-announce/2011-05/msg00005.html vendor-advisoryx_refsource_SUSE
- http://openwall.com/lists/oss-security/2011/04/01/3 mailing-listx_refsource_MLISTExploitPatch
- http://openwall.com/lists/oss-security/2011/04/04/35 mailing-listx_refsource_MLISTExploitPatch
- http://perl5.git.perl.org/perl.git/commit/539689e74a3bcb04d29e4cd9396de91a81045b99 x_refsource_CONFIRMPatch
- http://rt.perl.org/rt3/Public/Bug/Display.html?id=87336 x_refsource_CONFIRMExploit
- http://secunia.com/advisories/43921 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/44168 third-party-advisoryx_refsource_SECUNIA
- http://www.debian.org/security/2011/dsa-2265 vendor-advisoryx_refsource_DEBIAN
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:091 vendor-advisoryx_refsource_MANDRIVA
- http://www.securityfocus.com/bid/47124 vdb-entryx_refsource_BIDExploit
- https://access.redhat.com/security/cve/CVE-2011-1487 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=692844 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=692898 x_refsource_CONFIRMExploitPatchIssue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/66528 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2011-1487
- https://www.cve.org/CVERecord?id=CVE-2011-1487
Change history (0)
No recorded changes yet.