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CVE-2015-5621

Status Candidate

Overview

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.

Related Files

Debian Security Advisory 4154-1
Posted Mar 28, 2018
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4154-1 - A heap corruption vulnerability was discovered in net-snmp, a suite of Simple Network Management Protocol applications, triggered when parsing the PDU prior to the authentication process. A remote, unauthenticated attacker can take advantage of this flaw to crash the snmpd process (causing a denial of service) or, potentially, execute arbitrary code with the privileges of the user running snmpd.

tags | advisory, remote, denial of service, arbitrary, protocol
systems | linux, debian
advisories | CVE-2015-5621, CVE-2018-1000116
SHA-256 | c2fdf78354d35abec9941075f6a4273bb1213ca58a281c089f7c7f2f8527420a
Red Hat Security Advisory 2015-1636-01
Posted Aug 18, 2015
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2015-1636-01 - The net-snmp packages provide various libraries and tools for the Simple Network Management Protocol, including an SNMP library, an extensible agent, tools for requesting or setting information from SNMP agents, tools for generating and handling SNMP traps, a version of the netstat command which uses SNMP, and a Tk/Perl Management Information Base browser. It was discovered that the snmp_pdu_parse() function could leave incompletely parsed varBind variables in the list of variables. A remote, unauthenticated attacker could use this flaw to crash snmpd or, potentially, execute arbitrary code on the system with the privileges of the user running snmpd.

tags | advisory, remote, arbitrary, perl, protocol
systems | linux, redhat
advisories | CVE-2015-5621
SHA-256 | 7e93f979c50653c313c0d7725efcdfce77a93450f3525440e259a4fdc114f124
Ubuntu Security Notice USN-2711-1
Posted Aug 17, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2711-1 - It was discovered that Net-SNMP incorrectly handled certain trap messages when the -OQ option was used. A remote attacker could use this issue to cause Net-SNMP to crash, resulting in a denial of service. Qinghao Tang discovered that Net-SNMP incorrectly handled SNMP PDU parsing failures. A remote attacker could use this issue to cause Net-SNMP to crash, resulting in a denial of service, or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2014-3565, CVE-2015-5621
SHA-256 | 637f1672470959d86194903a05d03503644b70c98bc272b459ef69a1bfc19637
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