CVE-2008-0960
SNMPv3 - HMAC Validation error Remote Authentication Bypass
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
3Exploited in Wild
-Decision
Descriptions
SNMPv3 HMAC verification in (1) Net-SNMP 5.2.x before 5.2.4.1, 5.3.x before 5.3.2.1, and 5.4.x before 5.4.1.1; (2) UCD-SNMP; (3) eCos; (4) Juniper Session and Resource Control (SRC) C-series 1.0.0 through 2.0.0; (5) NetApp (aka Network Appliance) Data ONTAP 7.3RC1 and 7.3RC2; (6) SNMP Research before 16.2; (7) multiple Cisco IOS, CatOS, ACE, and Nexus products; (8) Ingate Firewall 3.1.0 and later and SIParator 3.1.0 and later; (9) HP OpenView SNMP Emanate Master Agent 15.x; and possibly other products relies on the client to specify the HMAC length, which makes it easier for remote attackers to bypass SNMP authentication via a length value of 1, which only checks the first byte.
Una comprobación SNMPv3 HMAC en (1) Net-SNMP versión 5.2.x anterior a 5.2.4.1, versión 5.3.x anterior a 5.3.2.1 y versión 5.4.x anterior a 5.4.1.1; (2) UCD-SNMP; (3) eCos; (4) C-series versión 1.0.0 hasta 2.0.0 de Juniper Session and Resource Control (SRC); (5) Data de NetApp (también se conoce como Network Appliance) ONTAP versiones 7.3RC1 y 7.3RC2; (6) SNMP Research versión anterior a 16.2; (7) múltiples productos Cisco IOS, CatOS, ACE y Nexus; (8) Ingate Firewall versión 3.1.0 y posterior y SIParator versión 3.1.0 y posterior; (9) HP OpenView SNMP Emanate Master Agent versión 15.x; y posiblemente otros productos dependen del cliente para especificar la longitud del HMAC, lo que facilita que los atacantes remotos omitan la autenticación SNMP por medio de un valor de longitud de 1, que solo comprueba el primer byte.
Wes Hardaker discovered that the SNMP service did not correctly validate HMAC authentication requests. An unauthenticated remote attacker could send specially crafted SNMPv3 traffic with a valid username and gain access to the user's views without a valid authentication passphrase. John Kortink discovered that the Net-SNMP Perl module did not correctly check the size of returned values. If a user or automated system were tricked into querying a malicious SNMP server, the application using the Perl module could be made to crash, leading to a denial of service. This did not affect Ubuntu 8.10. It was discovered that the SNMP service did not correctly handle large GETBULK requests. If an unauthenticated remote attacker sent a specially crafted request, the SNMP service could be made to crash, leading to a denial of service.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2008-02-25 CVE Reserved
- 2008-06-10 CVE Published
- 2008-06-13 First Exploit
- 2024-08-07 CVE Updated
- 2025-04-26 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-287: Improper Authentication
CAPEC
References (66)
URL | Date | SRC |
---|---|---|
https://packetstorm.news/files/id/67231 | 2008-06-13 | |
https://www.exploit-db.com/exploits/5790 | 2024-08-07 | |
http://www.securityfocus.com/bid/29623 | 2024-08-07 |
URL | Date | SRC |
---|---|---|
http://www.debian.org/security/2008/dsa-1663 | 2018-10-30 |
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
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Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |