OpenBSD 5.1/5.2 RFC Request Saturation Parsing openbsd_libc_portmap.c denial of service
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.9 | $0-$5k | 0.00 |
A vulnerability was found in OpenBSD 5.1/5.2 (Operating System). It has been classified as critical. Affected is an unknown code block of the file openbsd_libc_portmap.c of the component RFC Request Saturation Parsing. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability.
The weakness was released 11/22/2012 by auto236751 as OpenBSD implementation of the libc's RPC as not defined posting (Full-Disclosure). The advisory is available at archives.neohapsis.com. The vendor was not involved in the coordination of the public release. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known.
After immediately, there has been an exploit disclosed. It is declared as proof-of-concept. The real existence of this vulnerability is still doubted at the moment.
It is possible to mitigate the weakness by firewalling tcp/111 (sunrpc).
Further details are available at openbsd.org.
Product
Type
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.5VulDB Meta Temp Score: 6.9
VulDB Base Score: 7.5
VulDB Temp Score: 6.9
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Denial of serviceCWE: CWE-404
ATT&CK: T1499
Local: No
Remote: Yes
Availability: 🔍
Access: Public
Status: Proof-of-Concept
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: FirewallStatus: 🔍
0-Day Time: 🔍
Exploit Delay Time: 🔍
Firewalling: 🔍
Timeline
11/22/2012 🔍11/22/2012 🔍
11/26/2012 🔍
11/27/2012 🔍
11/27/2012 🔍
11/29/2012 🔍
08/20/2017 🔍
Sources
Advisory: OpenBSD implementation of the libc's RPCResearcher: auto236751
Status: Not defined
Disputed: 🔍
SecurityTracker: 1027814 - OpenBSD libc RPC Processing Flaw Lets Remote Users Deny Service
Secunia: 51299 - OpenBSD Portmap Denial of Service Vulnerability, Less Critical
OSVDB: 87859
scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
Entry
Created: 11/29/2012 10:17Updated: 08/20/2017 22:15
Changes: 11/29/2012 10:17 (57), 08/20/2017 22:15 (3)
Complete: 🔍
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