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CVE-2012-3461 (GCVE-0-2012-3461)

Vulnerability from cvelistv5 – Published: 2012-08-20 19:00 – Updated: 2024-08-06 20:05
VLAI
Summary
The (1) otrl_base64_otr_decode function in src/b64.c; (2) otrl_proto_data_read_flags and (3) otrl_proto_accept_data functions in src/proto.c; and (4) decode function in toolkit/parse.c in libotr before 3.2.1 allocates a zero-length buffer when decoding a base64 string, which allows remote attackers to cause a denial of service (application crash) via a message with the value "?OTR:===.", which triggers a heap-based buffer overflow.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
References
Date Public
2012-07-27 00:00
Show details on NVD website
To clipboard 

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    "nvd": "{\"cve\":{\"id\":\"CVE-2012-3461\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2012-08-20T19:55:05.527\",\"lastModified\":\"2026-04-29T01:13:23.040\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The (1) otrl_base64_otr_decode function in src/b64.c; (2) otrl_proto_data_read_flags and (3) otrl_proto_accept_data functions in src/proto.c; and (4) decode function in toolkit/parse.c in libotr before 3.2.1 allocates a zero-length buffer when decoding a base64 string, which allows remote attackers to cause a denial of service (application crash) via a message with the value \\\"?OTR:===.\\\", which triggers a heap-based buffer overflow.\"},{\"lang\":\"es\",\"value\":\"La funci\u00f3n (1) otrl_base64_otr_decode en src/b64.c; la funci\u00f3n (2) otrl_proto_data_read_flags y la funci\u00f3n (3) otrl_proto_accept_data en src/proto.c; y la funci\u00f3n (4) (decode) in toolkit/parse.c in libotr before v3.2.1 asigna un b\u00fafer de longitud cero cuando se decodifica un (string) en base64, lo que permite a atacantes remotos causar una denegaci\u00f3n de servicio (ca\u00edda de la aplicaci\u00f3n) a trav\u00e9s de un mensaje con el valor \\\"?OTR:===.\\\", lo cual dispara un desbordamiento de b\u00fafer basado en memoria din\u00e1mica.\"}],\"metrics\":{\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:N/I:N/A:P\",\"baseScore\":4.3,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-119\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cypherpunks:libotr:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"3.2.0\",\"matchCriteriaId\":\"16FB55F1-A4DA-48A8-A7B9-8ADA15F28F20\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cypherpunks:libotr:3.1.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"917BC37B-B3B5-4802-BF1C-96F1893AC68F\"}]}]}],\"references\":[{\"url\":\"http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=684121\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://lists.cypherpunks.ca/pipermail/otr-dev/2012-July/001347.html\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://lists.cypherpunks.ca/pipermail/otr-dev/2012-July/001348.html\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00016.html\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00019.html\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00019.html\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://otr.git.sourceforge.net/git/gitweb.cgi?p=otr/libotr%3Ba=commitdiff%3Bh=1902baee5d4b056850274ed0fa8c2409f1187435\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://otr.git.sourceforge.net/git/gitweb.cgi?p=otr/libotr%3Ba=commitdiff%3Bh=6d4ca89cf1d3c9a8aff696c3a846ac5a51f762c1\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://otr.git.sourceforge.net/git/gitweb.cgi?p=otr/libotr%3Ba=commitdiff%3Bh=b17232f86f8e60d0d22caf9a2400494d3c77da58\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://www.debian.org/security/2012/dsa-2526\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://www.mandriva.com/security/advisories?name=MDVSA-2012:131\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://www.mandriva.com/security/advisories?name=MDVSA-2013:097\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://www.securityfocus.com/bid/54907\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://www.ubuntu.com/usn/USN-1541-1\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=846377\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://exchange.xforce.ibmcloud.com/vulnerabilities/77528\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=684121\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://lists.cypherpunks.ca/pipermail/otr-dev/2012-July/001347.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://lists.cypherpunks.ca/pipermail/otr-dev/2012-July/001348.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00016.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00019.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00019.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://otr.git.sourceforge.net/git/gitweb.cgi?p=otr/libotr%3Ba=commitdiff%3Bh=1902baee5d4b056850274ed0fa8c2409f1187435\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://otr.git.sourceforge.net/git/gitweb.cgi?p=otr/libotr%3Ba=commitdiff%3Bh=6d4ca89cf1d3c9a8aff696c3a846ac5a51f762c1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://otr.git.sourceforge.net/git/gitweb.cgi?p=otr/libotr%3Ba=commitdiff%3Bh=b17232f86f8e60d0d22caf9a2400494d3c77da58\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.debian.org/security/2012/dsa-2526\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.mandriva.com/security/advisories?name=MDVSA-2012:131\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.mandriva.com/security/advisories?name=MDVSA-2013:097\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.securityfocus.com/bid/54907\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.ubuntu.com/usn/USN-1541-1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=846377\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://exchange.xforce.ibmcloud.com/vulnerabilities/77528\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "redhat_vex": {
      "current_release_date": "2025-11-21T12:51:13+00:00",
      "cve": "CVE-2012-3461",
      "id": "CVE-2012-3461",
      "initial_release_date": "2012-07-27T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "libotr: Multiple heap-based buffer overflows in the Base64 decoder",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2012/cve-2012-3461.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2025-10-08T01:01:51Z",
      "cve": "CVE-2012-3461",
      "id": "CVE-2012-3461",
      "initial_release_date": "2023-02-15T05:45:44Z",
      "product_status:recommended": "14",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2012-3461",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2012-3461.json",
      "version": "8"
    }
  }
}



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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.