Integer overflow in Net-Snmp
CVE-2015-5621
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.409 (98.6th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.400 · newest: 0.409 · change: +0.009
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.opensuse.org/opensuse-updates/2015-09/msg00004.html (vendor-advisory)
- www.exploit-db.com/exploits/45547/ (exploit)
- sourceforge.net/p/net-snmp/code/ci/f23bcd3ac6ddee5d0a48f9703007ccc738914791/
- rhn.redhat.com/errata/RHSA-2015-1636.html (vendor-advisory)
- www.securitytracker.com/id/1033304 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi
- www.ubuntu.com/usn/USN-2711-1 (vendor-advisory)
- www.openwall.com/lists/oss-security/2015/04/16/15 (mailing-list)
- www.openwall.com/lists/oss-security/2015/04/13/1 (mailing-list, Exploit)
- support.citrix.com/article/CTX209443
Frequently asked questions
- What is CVE-2015-5621?
- CVE-2015-5621 is a high-severity vulnerability in Net-Snmp, classified under CWE-19. CVSS score: 7.5/10. Published 2015-08-19.
- How severe is CVE-2015-5621?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2015-5621 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.