CVE-2015-5621: net-snmp Data Processing Errors

Vulnerability summary

CVE-2015-5621 is a high (CVSS 7.5) Data Processing Errors vulnerability in net-snmp. EPSS estimates a 40.88% chance of exploitation in the next 30 days, higher than 98.6% of scored vulnerabilities. 2 public exploits are recorded.

Timeline

1. 19-08-2015
   PublishedVulnerability first disclosed.
2. 04-12-2025
   Last modifiedVulnerability information updated.

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.

• CWE-19Data Processing ErrorsWeaknesses in this category are typically found in functionality that processes data. Data processing is the manipulation of input to retrieve or save information.
• CWE-190Integer Overflow or WraparoundThe product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.