Bug 2141898 (CVE-2022-44793) - CVE-2022-44793 net-snmp: NULL Pointer Exception when handling pv6IpForwarding
Summary: CVE-2022-44793 net-snmp: NULL Pointer Exception when handling pv6IpForwarding
Keywords:
Status: NEW
Alias: CVE-2022-44793
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
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Whiteboard:
Depends On: 2141904 2141905 2141906 2141903
Blocks: 2141107
TreeView+ depends on / blocked
 
Reported: 2022-11-11 04:21 UTC by Sandipan Roy
Modified: 2023-01-16 08:02 UTC (History)
1 user (show)

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A flaw was found in Net-SNMP. This issue occurs because the handle_ipv6IpForwarding in agent/mibgroup/ip-mib/ip_scalars.c in Net-SNMP has a NULL Pointer Exception that could allow a remote attacker to cause the instance to crash via a crafted UDP packet, resulting in a denial of service.
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Description Sandipan Roy 2022-11-11 04:21:27 UTC 
handle_ipv6IpForwarding in agent/mibgroup/ip-mib/ip_scalars.c in Net-SNMP 5.4.3 through 5.9.3 has a NULL Pointer Exception bug that can be used by a remote attacker to cause the instance to crash via a crafted UDP packet, resulting in Denial of Service.

https://github.com/net-snmp/net-snmp/issues/475
https://gist.github.com/menglong2234/d07a65b5028145c9f4e1d1db8c4c202f
Comment 1 Sandipan Roy 2022-11-11 04:29:09 UTC 
Created net-snmp tracking bugs for this issue:

Affects: fedora-35 [bug 2141903]
Affects: fedora-36 [bug 2141904]
Comment 3 Josef Ridky 2023-01-16 08:02:12 UTC 
Patch https://github.com/net-snmp/net-snmp/commit/be804106fd0771a7d05236cff36e199af077af57
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