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CVE-2015-5621 (GCVE-0-2015-5621)

Vulnerability from cvelistv5 – Published: 2015-08-19 15:00 – Updated: 2025-12-04 17:20
VLAI
Summary
The snmp_pdu_parse function in snmp_api.c in net-snmp 5.7.2 and earlier does not remove the varBind variable in a netsnmp_variable_list item when parsing of the SNMP PDU fails, which allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted packet.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-04 17:20 UTC
CWE
  • n/a
  • CWE-190 - Integer Overflow or Wraparound
Assigner
References
Date Public
2015-04-13 00:00
Show details on NVD website
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                  "refsource": "SUSE",
                  "url": "http://lists.opensuse.org/opensuse-updates/2015-09/msg00004.html"
                },
                {
                  "name": "45547",
                  "refsource": "EXPLOIT-DB",
                  "url": "https://www.exploit-db.com/exploits/45547/"
                },
                {
                  "name": "http://sourceforge.net/p/net-snmp/code/ci/f23bcd3ac6ddee5d0a48f9703007ccc738914791/",
                  "refsource": "CONFIRM",
                  "url": "http://sourceforge.net/p/net-snmp/code/ci/f23bcd3ac6ddee5d0a48f9703007ccc738914791/"
                },
                {
                  "name": "RHSA-2015:1636",
                  "refsource": "REDHAT",
                  "url": "http://rhn.redhat.com/errata/RHSA-2015-1636.html"
                },
                {
                  "name": "1033304",
                  "refsource": "SECTRACK",
                  "url": "http://www.securitytracker.com/id/1033304"
                },
                {
                  "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1212408",
                  "refsource": "CONFIRM",
                  "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1212408"
                },
                {
                  "name": "USN-2711-1",
                  "refsource": "UBUNTU",
                  "url": "http://www.ubuntu.com/usn/USN-2711-1"
                },
                {
                  "name": "[oss-security] 20150416 Re: net-snmp snmp_pdu_parse() function incompletely initializaition vulnerability",
                  "refsource": "MLIST",
                  "url": "http://www.openwall.com/lists/oss-security/2015/04/16/15"
                },
                {
                  "name": "[oss-security] 20150413 net-snmp snmp_pdu_parse() function incompletely initializaition vulnerability",
                  "refsource": "MLIST",
                  "url": "http://www.openwall.com/lists/oss-security/2015/04/13/1"
                },
                {
                  "name": "http://support.citrix.com/article/CTX209443",
                  "refsource": "CONFIRM",
                  "url": "http://support.citrix.com/article/CTX209443"
                },
                {
                  "name": "DSA-4154",
                  "refsource": "DEBIAN",
                  "url": "https://www.debian.org/security/2018/dsa-4154"
                },
                {
                  "name": "[oss-security] 20150731 Re: net-snmp snmp_pdu_parse() function incompletely initializaition vulnerability",
                  "refsource": "MLIST",
                  "url": "http://www.openwall.com/lists/oss-security/2015/07/31/1"
                },
                {
                  "name": "https://sourceforge.net/p/net-snmp/bugs/2615/",
                  "refsource": "CONFIRM",
                  "url": "https://sourceforge.net/p/net-snmp/bugs/2615/"
                },
                {
                  "name": "76380",
                  "refsource": "BID",
                  "url": "http://www.securityfocus.com/bid/76380"
                },
                {
                  "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-978220.pdf",
                  "refsource": "CONFIRM",
                  "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-978220.pdf"
                }
              ]
            }
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "assignerShortName": "mitre",
        "cveId": "CVE-2015-5621",
        "datePublished": "2015-08-19T15:00:00.000Z",
        "dateReserved": "2015-07-22T00:00:00.000Z",
        "dateUpdated": "2025-12-04T17:20:54.452Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.