CVE-2015-5621

Severity: high (CVSS 7.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 38.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2015-08-19 · updated 2026-06-17
Weakness: CWE-19

Description

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.

Affected products

net-snmp: through 5.7.2

References

http://lists.opensuse.org/opensuse-updates/2015-09/msg00004.html
http://rhn.redhat.com/errata/RHSA-2015-1636.html
http://sourceforge.net/p/net-snmp/code/ci/f23bcd3ac6ddee5d0a48f9703007ccc738914791/
http://support.citrix.com/article/CTX209443
http://www.openwall.com/lists/oss-security/2015/04/13/1
http://www.openwall.com/lists/oss-security/2015/04/16/15
http://www.openwall.com/lists/oss-security/2015/07/31/1
http://www.securityfocus.com/bid/76380
http://www.securitytracker.com/id/1033304
http://www.ubuntu.com/usn/USN-2711-1
https://bugzilla.redhat.com/show_bug.cgi?id=1212408
https://cert-portal.siemens.com/productcert/pdf/ssa-978220.pdf

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