Home/CVE/Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability
CVE

CVE-2010-3035

Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability

Cisco IOS XR 3.4.0 through 3.9.1, when BGP is enabled, does not properly handle unrecognized transitive attributes, which allows remote attackers to cause a denial of service (peering reset) via a crafted prefix announcement, as demonstrated in the wild in August 2010 with attribute type code 99, aka Bug ID CSCti62211.

HIGH · CVSS 7.5 ⚠ CISA KEV EPSS 0.053
Act now
  • Listed on CISA KEV (known exploited in the wild)
  • SSVC exploitation status: active
  • EPSS percentile: top 10% of all CVEs by exploitation likelihood
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬢

Required Remediation

Apply updates per vendor instructions.

▤

Affected Products & Versions

1
cisco ios xr>= 3.4.0 and <= 3.9.1
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · psirt@cisco.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD30 Aug 2010 · 09:00 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
active
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
cisaKEV-CVE-2010-3035
🔗

References & Sources

8
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://mailman.nanog.org/pipermail/nanog/2010-August/024837.htmlMailing List
http://osvdb.org/67696Broken Link
http://secunia.com/advisories/41190Broken Link
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b4411f.shtmlBroken LinkVendor Advisory
http://www.securitytracker.com/id?1024371Broken LinkThird Party AdvisoryVDB Entry
http://www.vupen.com/english/advisories/2010/2227Broken Link
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