MEDIUM
: pcre < 7.3 non-UTF-8 over-backtracking issue
Published Nov 7, 2007
6.4
MEDIUMCVSS 2.0
EPSS 2.49%
Description
Perl-Compatible Regular Expression (PCRE) library before 7.3 backtracks too far when matching certain input bytes against some regex patterns in non-UTF-8 mode, which allows context-dependent attackers to obtain sensitive information or cause a denial of service (crash), as demonstrated by the "\X?\d" and "\P{L}?\d" patterns.
Affected products
No data.
Configuration 1
OR
- ≤ 7.2
- 7.0
- 7.1
Configuration 2
OR
- 10.4.11
- 10.4.11
No data.
No Red Hat product state for this CVE.
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.
6.4 MEDIUM NVD
AV:N/AC:L/Au:N/C:P/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.49% 0.02492
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02492
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 (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.49% (0.02492) | 84.08th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.49% (0.02492) | 82.53th | v5 (v2026.06.15) |
| Mar 30, 2025 | 2.72% (0.02716) | 84.63th | v4 (v2025.03.14) |
| Mar 29, 2025 | 7.96% (0.07962) | 86.52th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.22% (0.02220) | 83.33th | v4 (v2025.03.14) |
| Jan 2, 2025 | 15.54% (0.15537) | 95.88th | v3 (v2023.03.01) |
| Dec 17, 2024 | 13.94% (0.13941) | 95.64th | v3 (v2023.03.01) |
| Dec 12, 2024 | 4.54% (0.04536) | 92.80th | v3 (v2023.03.01) |
| Sep 10, 2024 | 4.10% (0.04103) | 92.34th | v3 (v2023.03.01) |
| Jun 26, 2024 | 2.82% (0.02819) | 90.74th | v3 (v2023.03.01) |
| Apr 10, 2024 | 2.09% (0.02091) | 88.92th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.86% (0.01860) | 86.49th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.69% (0.02686) | 81.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.69% (0.02686) | 62.66th | v2 (v2022.01.01) |
Weaknesses (0)
No CWE recorded.
References (48)
- http://bugs.gentoo.org/show_bug.cgi?id=198976 x_refsource_MISC
- http://docs.info.apple.com/article.html?artnum=307179 x_refsource_CONFIRM
- http://docs.info.apple.com/article.html?artnum=307562 x_refsource_CONFIRM
- http://lists.apple.com/archives/security-announce/2007/Dec/msg00002.html vendor-advisoryx_refsource_APPLE
- http://lists.apple.com/archives/security-announce/2008/Mar/msg00001.html vendor-advisoryx_refsource_APPLE
- http://mail.gnome.org/archives/gtk-devel-list/2007-November/msg00022.html mailing-listx_refsource_MLIST
- http://secunia.com/advisories/27538 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/27543 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/27554 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/27697 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/27741 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/27773 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/28136 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/28406 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/28414 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/28714 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/28720 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/29267 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/29420 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/30106 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/30155 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/30219 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://security.gentoo.org/glsa/glsa-200711-30.xml vendor-advisoryx_refsource_GENTOO
- http://security.gentoo.org/glsa/glsa-200801-02.xml vendor-advisoryx_refsource_GENTOO
- http://security.gentoo.org/glsa/glsa-200801-18.xml vendor-advisoryx_refsource_GENTOO
- http://security.gentoo.org/glsa/glsa-200801-19.xml vendor-advisoryx_refsource_GENTOO
- http://security.gentoo.org/glsa/glsa-200805-11.xml vendor-advisoryx_refsource_GENTOO
- http://www.debian.org/security/2007/dsa-1399 vendor-advisoryx_refsource_DEBIANPatch
- http://www.debian.org/security/2008/dsa-1570 vendor-advisoryx_refsource_DEBIAN
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:211 vendor-advisoryx_refsource_MANDRIVA
- http://www.novell.com/linux/security/advisories/2007_62_pcre.html vendor-advisoryx_refsource_SUSE
- http://www.pcre.org/changelog.txt x_refsource_CONFIRM
- http://www.securityfocus.com/archive/1/483357/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/archive/1/483579/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/26346 vdb-entryx_refsource_BID
- http://www.us-cert.gov/cas/techalerts/TA07-352A.html third-party-advisoryx_refsource_CERTUS Government Resource
- http://www.vupen.com/english/advisories/2007/3725 vdb-entryx_refsource_VUPEN
- http://www.vupen.com/english/advisories/2007/3790 vdb-entryx_refsource_VUPEN
- http://www.vupen.com/english/advisories/2007/4238 vdb-entryx_refsource_VUPEN
- http://www.vupen.com/english/advisories/2008/0924/references vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2007-1661 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=392931 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/38274 vdb-entryx_refsource_XF
- https://issues.rpath.com/browse/RPL-1738 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2007-1661
- https://usn.ubuntu.com/547-1/ vendor-advisoryx_refsource_UBUNTU
- https://www.cve.org/CVERecord?id=CVE-2007-1661
- https://www.redhat.com/archives/fedora-package-announce/2008-March/msg00181.html vendor-advisoryx_refsource_FEDORA
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Nov 7, 2007
Updated Aug 7, 2024
Reserved Mar 24, 2007
Link CVE-2007-1661
CISA Vulnrichment
Updated n/a