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    CVE-2007-4430

    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.

    Published:Aug 20, 2007
    Last Modified:Apr 23, 2026
    EPS:Aug 20, 2007
    EPSS Score:0.26968
    CVSS Score:5

    Affected Products

    Vendor
    Cisco
    Product
    Cbos
    Vendor
    Cisco
    Product
    Cli
    Vendor
    Cisco
    Product
    Ids
    Vendor
    Cisco
    Product
    Ios
    Vendor
    Cisco
    Product
    Ios Xr

    Exploits

    https://www.exploit-db.com/exploits/30506

    Common Weakness Enumeration

    CWE-20 Improper Input Validation

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-10 Buffer Overflow via Environment Variables
    CAPEC-101 Server Side Include (SSI) Injection
    CAPEC-104 Cross Zone Scripting
    CAPEC-108 Command Line Execution through SQL Injection
    CAPEC-109 Object Relational Mapping Injection
    CAPEC-110 SQL Injection through SOAP Parameter Tampering
    CAPEC-120 Double Encoding
    CAPEC-13 Subverting Environment Variable Values
    CAPEC-135 Format String Injection
    CAPEC-136 LDAP Injection
    CAPEC-14 Client-side Injection-induced Buffer Overflow
    CAPEC-153 Input Data Manipulation
    CAPEC-182 Flash Injection
    CAPEC-209 XSS Using MIME Type Mismatch
    CAPEC-22 Exploiting Trust in Client
    CAPEC-23 File Content Injection
    CAPEC-230 Serialized Data with Nested Payloads
    CAPEC-231 Oversized Serialized Data Payloads
    CAPEC-24 Filter Failure through Buffer Overflow
    CAPEC-250 XML Injection
    CAPEC-261 Fuzzing for garnering other adjacent user/sensitive data
    CAPEC-267 Leverage Alternate Encoding
    CAPEC-28 Fuzzing
    CAPEC-3 Using Leading 'Ghost' Character Sequences to Bypass Input Filters
    CAPEC-31 Accessing/Intercepting/Modifying HTTP Cookies
    CAPEC-42 MIME Conversion
    CAPEC-43 Exploiting Multiple Input Interpretation Layers
    CAPEC-45 Buffer Overflow via Symbolic Links
    CAPEC-46 Overflow Variables and Tags
    CAPEC-47 Buffer Overflow via Parameter Expansion
    CAPEC-473 Signature Spoof
    CAPEC-52 Embedding NULL Bytes
    CAPEC-53 Postfix, Null Terminate, and Backslash
    CAPEC-588 DOM-Based XSS
    CAPEC-63 Cross-Site Scripting (XSS)
    CAPEC-64 Using Slashes and URL Encoding Combined to Bypass Validation Logic
    CAPEC-664 Server Side Request Forgery
    CAPEC-67 String Format Overflow in syslog()
    CAPEC-7 Blind SQL Injection
    CAPEC-71 Using Unicode Encoding to Bypass Validation Logic
    CAPEC-72 URL Encoding
    CAPEC-73 User-Controlled Filename
    CAPEC-78 Using Escaped Slashes in Alternate Encoding
    CAPEC-79 Using Slashes in Alternate Encoding
    CAPEC-8 Buffer Overflow in an API Call
    CAPEC-80 Using UTF-8 Encoding to Bypass Validation Logic
    CAPEC-81 Web Server Logs Tampering
    CAPEC-83 XPath Injection
    CAPEC-85 AJAX Footprinting
    CAPEC-88 OS Command Injection
    CAPEC-9 Buffer Overflow in Local Command-Line Utilities

    Related CVEs

    CVE-2002-0886 (CVSS 5) — Cisco DSL CPE devices running CBOS 2.4.4 and earlier allows remote attackers to cause a denial of service (han…
    CVE-2001-0754 (CVSS 5) — Cisco CBOS 2.3.8 and earlier allows remote attackers to cause a denial of service via a series of large ICMP E…
    CVE-2001-0751 (CVSS 7.5) — Cisco switches and routers running CBOS 2.3.8 and earlier use predictable TCP Initial Sequence Numbers (ISN), …
    CVE-2001-0752 (CVSS 5) — Cisco CBOS 2.3.8 and earlier allows remote attackers to cause a denial of service via an ICMP ECHO REQUEST (pi…
    CVE-2001-0753 (CVSS 7.5) — Cisco CBOS 2.3.8 and earlier stores the passwords for (1) exec and (2) enable in cleartext in the NVRAM and a …
    CVE-2001-1064 (CVSS 5) — Cisco 600 series routers running CBOS 2.0.1 through 2.4.2ap allows remote attackers to cause a denial of servi…
    CVE-2001-1065 (CVSS 5) — Web-based configuration utility in Cisco 600 series routers running CBOS 2.0.1 through 2.4.2ap binds itself to…
    CVE-2001-0444 (CVSS 2.1) — Cisco CBOS 2.3.0.053 sends output of the "sh nat" (aka "show nat") command to the terminal of the next user wh…

    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
    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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High