CVE-2007-1661 (GCVE-0-2007-1661)

Vulnerability from cvelistv5 – Published: 2007-11-07 20:00 – Updated: 2024-08-07 13:06
VLAI
Summary
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.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
mitre CNA under the mitre root
CNA scorecard E 29/100 over 2269 records in the last 180 days details
References
URL Tags
http://secunia.com/advisories/30219 third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/29267 third-party-advisoryx_refsource_SECUNIA
https://usn.ubuntu.com/547-1/ vendor-advisoryx_refsource_UBUNTU
http://security.gentoo.org/glsa/glsa-200711-30.xml vendor-advisoryx_refsource_GENTOO
http://www.vupen.com/english/advisories/2007/4238 vdb-entryx_refsource_VUPEN
http://www.securityfocus.com/archive/1/483357/100… mailing-listx_refsource_BUGTRAQ
http://www.us-cert.gov/cas/techalerts/TA07-352A.html third-party-advisoryx_refsource_CERT
http://secunia.com/advisories/27538 third-party-advisoryx_refsource_SECUNIA
http://www.securityfocus.com/archive/1/483579/100… mailing-listx_refsource_BUGTRAQ
http://secunia.com/advisories/28136 third-party-advisoryx_refsource_SECUNIA
http://www.debian.org/security/2008/dsa-1570 vendor-advisoryx_refsource_DEBIAN
https://issues.rpath.com/browse/RPL-1738 x_refsource_CONFIRM
http://secunia.com/advisories/27773 third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/27697 third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/28406 third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/27554 third-party-advisoryx_refsource_SECUNIA
http://www.vupen.com/english/advisories/2008/0924… vdb-entryx_refsource_VUPEN
https://exchange.xforce.ibmcloud.com/vulnerabilit… vdb-entryx_refsource_XF
http://secunia.com/advisories/27543 third-party-advisoryx_refsource_SECUNIA
http://mail.gnome.org/archives/gtk-devel-list/200… mailing-listx_refsource_MLIST
http://secunia.com/advisories/29420 third-party-advisoryx_refsource_SECUNIA
http://lists.apple.com/archives/security-announce… vendor-advisoryx_refsource_APPLE
http://security.gentoo.org/glsa/glsa-200805-11.xml vendor-advisoryx_refsource_GENTOO
http://lists.apple.com/archives/security-announce… vendor-advisoryx_refsource_APPLE
http://www.mandriva.com/security/advisories?name=… vendor-advisoryx_refsource_MANDRIVA
https://www.redhat.com/archives/fedora-package-an… vendor-advisoryx_refsource_FEDORA
http://docs.info.apple.com/article.html?artnum=307179 x_refsource_CONFIRM
http://secunia.com/advisories/27741 third-party-advisoryx_refsource_SECUNIA
http://www.vupen.com/english/advisories/2007/3790 vdb-entryx_refsource_VUPEN
http://www.vupen.com/english/advisories/2007/3725 vdb-entryx_refsource_VUPEN
http://www.novell.com/linux/security/advisories/2… vendor-advisoryx_refsource_SUSE
http://www.pcre.org/changelog.txt x_refsource_CONFIRM
http://docs.info.apple.com/article.html?artnum=307562 x_refsource_CONFIRM
http://secunia.com/advisories/30155 third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/28720 third-party-advisoryx_refsource_SECUNIA
http://security.gentoo.org/glsa/glsa-200801-02.xml vendor-advisoryx_refsource_GENTOO
http://bugs.gentoo.org/show_bug.cgi?id=198976 x_refsource_MISC
http://security.gentoo.org/glsa/glsa-200801-19.xml vendor-advisoryx_refsource_GENTOO
http://security.gentoo.org/glsa/glsa-200801-18.xml vendor-advisoryx_refsource_GENTOO
http://www.debian.org/security/2007/dsa-1399 vendor-advisoryx_refsource_DEBIAN
http://secunia.com/advisories/28414 third-party-advisoryx_refsource_SECUNIA
http://www.securityfocus.com/bid/26346 vdb-entryx_refsource_BID
http://secunia.com/advisories/30106 third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/28714 third-party-advisoryx_refsource_SECUNIA
Date Public
2007-08-28 00:00
Show details on NVD website
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          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
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          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
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          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
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            "url": "http://secunia.com/advisories/30106"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
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            "url": "http://secunia.com/advisories/30155"
          },
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            "source": "af854a3a-2127-422b-91ae-364da2661108",
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            "url": "http://secunia.com/advisories/30219"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://security.gentoo.org/glsa/glsa-200711-30.xml"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://security.gentoo.org/glsa/glsa-200801-02.xml"
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          {
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            "url": "http://security.gentoo.org/glsa/glsa-200801-19.xml"
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            "url": "http://security.gentoo.org/glsa/glsa-200805-11.xml"
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          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
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            "url": "http://www.debian.org/security/2007/dsa-1399"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.debian.org/security/2008/dsa-1570"
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          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.mandriva.com/security/advisories?name=MDKSA-2007:211"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.novell.com/linux/security/advisories/2007_62_pcre.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.pcre.org/changelog.txt"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securityfocus.com/archive/1/483357/100/0/threaded"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
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          {
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            "url": "http://www.securityfocus.com/bid/26346"
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          {
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            "tags": [
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          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.vupen.com/english/advisories/2007/3725"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.vupen.com/english/advisories/2007/3790"
          },
          {
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            "url": "http://www.vupen.com/english/advisories/2007/4238"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.vupen.com/english/advisories/2008/0924/references"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/38274"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://issues.rpath.com/browse/RPL-1738"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://usn.ubuntu.com/547-1/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://www.redhat.com/archives/fedora-package-announce/2008-March/msg00181.html"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-Other"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2025-11-21T13:18:28+00:00",
      "cve": "CVE-2007-1661",
      "id": "CVE-2007-1661",
      "initial_release_date": "2007-11-05T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": ": pcre \u003c 7.3 non-UTF-8 over-backtracking issue",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2007/cve-2007-1661.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2023-12-09T03:41:02Z",
      "cve": "CVE-2007-1661",
      "id": "CVE-2007-1661",
      "initial_release_date": "2023-02-15T06:12:33Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2007-1661",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2007-1661.json",
      "version": "4"
    }
  }
}



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Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.