FKIE_CVE-2009-5155

Vulnerability from fkie_nvd - Published: 2019-02-26 02:29 - Updated: 2026-06-16 23:15
Severity
7.5 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
In the GNU C Library (aka glibc or libc6) before 2.28, parse_reg_exp in posix/regcomp.c misparses alternatives, which allows attackers to cause a denial of service (assertion failure and application exit) or trigger an incorrect result by attempting a regular-expression match.
References
cve@mitre.orghttp://git.savannah.gnu.org/cgit/gnulib.git/commit/?id=5513b40999149090987a0341c018d05d3eea1272Mailing List, Patch, Vendor Advisory
cve@mitre.orghttps://debbugs.gnu.org/cgi/bugreport.cgi?bug=22793Mailing List, Vendor Advisory
cve@mitre.orghttps://debbugs.gnu.org/cgi/bugreport.cgi?bug=32806Exploit, Mailing List, Vendor Advisory
cve@mitre.orghttps://debbugs.gnu.org/cgi/bugreport.cgi?bug=34238Exploit, Mailing List, Vendor Advisory
cve@mitre.orghttps://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
cve@mitre.orghttps://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20190315-0002/Patch, Third Party Advisory
cve@mitre.orghttps://sourceware.org/bugzilla/show_bug.cgi?id=11053Exploit, Issue Tracking, Third Party Advisory
cve@mitre.orghttps://sourceware.org/bugzilla/show_bug.cgi?id=18986Exploit, Issue Tracking, Third Party Advisory
cve@mitre.orghttps://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=eb04c21373e2a2885f3d52ff192b0499afe3c672
cve@mitre.orghttps://support.f5.com/csp/article/K64119434
cve@mitre.orghttps://support.f5.com/csp/article/K64119434?utm_source=f5support&amp%3Butm_medium=RSS
af854a3a-2127-422b-91ae-364da2661108http://git.savannah.gnu.org/cgit/gnulib.git/commit/?id=5513b40999149090987a0341c018d05d3eea1272Mailing List, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://debbugs.gnu.org/cgi/bugreport.cgi?bug=22793Mailing List, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://debbugs.gnu.org/cgi/bugreport.cgi?bug=32806Exploit, Mailing List, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34238Exploit, Mailing List, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20190315-0002/Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://sourceware.org/bugzilla/show_bug.cgi?id=11053Exploit, Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://sourceware.org/bugzilla/show_bug.cgi?id=18986Exploit, Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=eb04c21373e2a2885f3d52ff192b0499afe3c672
af854a3a-2127-422b-91ae-364da2661108https://support.f5.com/csp/article/K64119434
af854a3a-2127-422b-91ae-364da2661108https://support.f5.com/csp/article/K64119434?utm_source=f5support&amp%3Butm_medium=RSS
Impacted products
Vendor Product Version
gnu glibc *
netapp cloud_backup *
netapp ontap_select_deploy_administration_utility -
netapp steelstore_cloud_integrated_storage -
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
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              "versionEndExcluding": "2.28",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the GNU C Library (aka glibc or libc6) before 2.28, parse_reg_exp in posix/regcomp.c misparses alternatives, which allows attackers to cause a denial of service (assertion failure and application exit) or trigger an incorrect result by attempting a regular-expression match."
    },
    {
      "lang": "es",
      "value": "En la biblioteca GNU C (tambi\u00e9n conocida como glibc o libc6), en versiones anteriores a la 2.28, parse_reg_exp en posix/regcomp.c analiza err\u00f3neamente las alternativas, lo que permite que los atacantes provoquen una denegaci\u00f3n de servicio (fallo de aserci\u00f3n y salida de la aplicaci\u00f3n) o desencadenen un resultado incorrecto intentando realizar una coincidencia de expresiones regulares."
    }
  ],
  "id": "CVE-2009-5155",
  "lastModified": "2026-06-16T23:15:11.070",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.0"
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        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2019-02-26T02:29:00.277",
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  "vulnStatus": "Modified",
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          "value": "CWE-19"
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      "source": "nvd@nist.gov",
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  ]
}



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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.



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.