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FKIE_CVE-2017-7752

Vulnerability from fkie_nvd - Published: 2018-06-11 21:29 - Updated: 2026-06-17 01:25
Severity
8.8 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Summary
A use-after-free vulnerability during specific user interactions with the input method editor (IME) in some languages due to how events are handled. This results in a potentially exploitable crash but would require specific user interaction to trigger. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.
References
security@mozilla.orghttp://www.securityfocus.com/bid/99057Third Party Advisory, VDB Entry
security@mozilla.orghttp://www.securitytracker.com/id/1038689Third Party Advisory, VDB Entry
security@mozilla.orghttps://access.redhat.com/errata/RHSA-2017:1440Third Party Advisory
security@mozilla.orghttps://access.redhat.com/errata/RHSA-2017:1561Third Party Advisory
security@mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1359547Issue Tracking, Vendor Advisory
security@mozilla.orghttps://www.debian.org/security/2017/dsa-3881Third Party Advisory
security@mozilla.orghttps://www.debian.org/security/2017/dsa-3918Third Party Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2017-15/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2017-16/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2017-17/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/99057Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1038689Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2017:1440Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2017:1561Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.mozilla.org/show_bug.cgi?id=1359547Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2017/dsa-3881Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2017/dsa-3918Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2017-15/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2017-16/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2017-17/Vendor Advisory
Impacted products
Vendor Product Version
debian debian_linux 8.0
debian debian_linux 9.0
redhat enterprise_linux 6.0
redhat enterprise_linux 7.0
redhat enterprise_linux_desktop 6.0
redhat enterprise_linux_desktop 7.0
redhat enterprise_linux_server 6.0
redhat enterprise_linux_server 7.0
redhat enterprise_linux_server_aus 7.3
redhat enterprise_linux_server_aus 7.4
redhat enterprise_linux_server_eus 7.3
redhat enterprise_linux_server_eus 7.4
redhat enterprise_linux_server_eus 7.5
redhat enterprise_linux_workstation 6.0
redhat enterprise_linux_workstation 7.0
mozilla firefox *
mozilla firefox *
mozilla thunderbird *
To clipboard 

{
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              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
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          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "52.2",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
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      "source": "security@mozilla.org"
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A use-after-free vulnerability during specific user interactions with the input method editor (IME) in some languages due to how events are handled. This results in a potentially exploitable crash but would require specific user interaction to trigger. This vulnerability affects Firefox \u003c 54, Firefox ESR \u003c 52.2, and Thunderbird \u003c 52.2."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de uso de memoria previamente liberada durante interacciones de usuario espec\u00edficas con el IME (input method editor) en algunos lenguajes debido a la forma en la que se gestionan los eventos. Esto resulta en un cierre inesperado potencialmente explotable, pero ser\u00eda necesaria interacci\u00f3n espec\u00edfica del usuario para desencadenarlo. La vulnerabilidad afecta a Firefox en versiones anteriores a la 54, Firefox ESR en versiones anteriores a la 52.2 y Thunderbird en versiones anteriores a la 52.2."
    }
  ],
  "id": "CVE-2017-7752",
  "lastModified": "2026-06-17T01:25:07.393",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.8,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": true
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          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
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          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
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        "source": "nvd@nist.gov",
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  "published": "2018-06-11T21:29:07.827",
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  "vulnStatus": "Modified",
  "weaknesses": [
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          "lang": "en",
          "value": "CWE-416"
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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.


Detection rules are retrieved from Rulezet.


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.