ArchLinux: 201810-11: net-snmp: multiple issues
Summary
- CVE-2015-5621 (arbitrary code execution)
It was discovered that in net-snmp before 5.8 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.
- CVE-2018-18065 (denial of service)
A denial of service vulnerability has been discovered in net-snmp
before 5.8. The _set_key function in agent/helpers/table_container.c
has a NULL pointer exception bug that can be used by an authenticated
attacker to remotely cause the instance to crash via a crafted UDP
packet, resulting in denial of service.
Resolution
Upgrade to 5.8-1.
# pacman -Syu "net-snmp>=5.8-1"
The problems have been fixed upstream in version 5.8.
References
https://seclists.org/oss-sec/2018/q4/24 https://sourceforge.net/p/net-snmp/bugs/2615/ https://sourceforge.net/p/net-snmp/code/ci/f23bcd3ac6ddee5d0a48f9703007ccc738914791 https://www.openwall.com/lists/oss-security/2015/04/13/1 https://bugzilla.redhat.com/show_bug.cgi?id=1212408 https://sourceforge.net/p/net-snmp/bugs/2743/ https://sourceforge.net/p/net-snmp/code/ci/7ffb8e25a0db851953155de91f0170e9bf8c457d https://dumpco.re/blog/net-snmp-5.7.3-remote-dos https://security.archlinux.org/CVE-2015-5621 https://security.archlinux.org/CVE-2018-18065
Workaround
None.