CVE-2007-4430

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 13.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2007-08-20 · updated 2026-06-16
Weakness: CWE-20

Description

Unspecified vulnerability in Cisco IOS 12.0 through 12.4 allows context-dependent attackers to cause a denial of service (device restart and BGP routing table rebuild) via certain regular expressions in a "show ip bgp regexp" command. NOTE: unauthenticated remote attacks are possible in environments with anonymous telnet and Looking Glass access.

Affected products

Cisco Cbos: 12.1, 12.2
Cisco Cli: all versions
Cisco Ids: all versions
Cisco IOS: 10.0, 10.3, 11.0, 11.1, 11.2, 12.0 (+4)
Cisco IOS XR Software: 2.0, 3.0, 3.1, 3.2, 3.3, 3.4

References

http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Network%20Infrastructure&topic=WAN%2C%20Routing%20and%20Switching&CommCmd=MB%3Fcmd%3Ddisplay_location%26location%3D.1ddf7bc9
http://secunia.com/advisories/26798
http://www.cisco.com/en/US/products/products_security_response09186a00808bb91c.html
http://www.heise-security.co.uk/news/94526/
http://www.securityfocus.com/bid/25352
http://www.securitytracker.com/id?1018685
http://www.vupen.com/english/advisories/2007/3136
https://puck.nether.net/pipermail/cisco-nsp/2007-August/043002.html
https://puck.nether.net/pipermail/cisco-nsp/2007-August/043010.html
http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Network%20Infrastructure&topic=WAN%2C%20Routing%20and%20Switching&CommCmd=MB%3Fcmd%3Ddisplay_location%26location%3D.1ddf7bc9
http://secunia.com/advisories/26798
http://www.cisco.com/en/US/products/products_security_response09186a00808bb91c.html

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