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Mallory
High

Buffer Overflow in net-snmp NET-SNMP-VACM-MIB INDEX Handling

IdentifiersCVE-2022-24805CWE-787

CVE-2022-24805 affects net-snmp prior to version 5.9.2. The vulnerability is a buffer overflow in handling the INDEX of NET-SNMP-VACM-MIB, which can lead to out-of-bounds memory access. The provided content states that a user with read-only credentials can trigger the flaw. In downstream Citrix XenServer 8 deployments using the affected net-snmp component, exploitation can crash or render the host SNMP service unresponsive.

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ANALYST BRIEF

Impact, mitigation & remediation

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Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation can cause out-of-bounds memory access and denial of service. Based on the provided content, the practical observed impact is that an attacker with read-only credentials on the management network may crash or hang the XenServer host SNMP service, rendering it unresponsive.

Mitigation

If you can’t patch tonight, do this now.

Use strong SNMPv3 credentials and avoid sharing credentials. Where SNMPv1 or SNMPv2c must be used, use a complex community string and restrict access to trusted IP address ranges. Additionally, limit exposure of management interfaces and management-network access to authorized systems only.

Remediation

Patch, then assume compromise.

Upgrade net-snmp to version 5.9.2 or later, as version 5.9.2 contains the patch referenced in the provided content. In affected Citrix environments, apply the vendor-provided XenServer 8 updates through the Early Access or Normal update channels, or the relevant Citrix Hypervisor hotfix where applicable, following vendor guidance.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
DebianDebian Linuxoperating_system
Fedora ProjectFedoraoperating_system
Net-SnmpNet-Snmpapplication
Red HatEnterprise Linuxoperating_system
Red HatEnterprise Linux Eusoperating_system
Red HatEnterprise Linux For Arm 64operating_system
Red HatEnterprise Linux For Arm 64 Eusoperating_system
Red HatEnterprise Linux For Ibm Z Systemsoperating_system
Red HatEnterprise Linux For Ibm Z Systems Eusoperating_system
Red HatEnterprise Linux For Power Little Endianoperating_system
Red HatEnterprise Linux For Power Little Endian Eusoperating_system
Red HatEnterprise Linux Server Ausoperating_system
Red HatEnterprise Linux Server For Power Little Endian Update Services For Sap Solutionsoperating_system
Red HatEnterprise Linux Server Update Services For Sap Solutionsoperating_system
Red HatEnterprise Linux Update Services For Sap Solutionsoperating_system

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