CVE-2017-6627 A vulnerability in the UDP processing code of Cisco IOS 15.1, 15.2, and 15.4 and IOS XE 3.14 through 3.18 could allow an unauthenticated, remote attacker to cause the input queue of an affected system...
- Published
- Updated
- Exploit status
- Exploited in the wild (confirmed)
Description
A vulnerability in the UDP processing code of Cisco IOS 15.1, 15.2, and 15.4 and IOS XE 3.14 through 3.18 could allow an unauthenticated, remote attacker to cause the input queue of an affected system to hold UDP packets, causing an interface queue wedge and a denial of service (DoS) condition. The vulnerability is due to Cisco IOS Software application changes that create UDP sockets and leave the sockets idle without closing them. An attacker could exploit this vulnerability by sending UDP packets with a destination port of 0 to an affected device. A successful exploit could allow the attacker to cause UDP packets to be held in the input interfaces queue, resulting in a DoS condition. The input interface queue will stop holding UDP packets when it receives 250 packets. Cisco Bug IDs: CSCup10024, CSCva55744, CSCva95506.
CISA Known Exploited Vulnerability
- Date added
- 2022-03-03
- Due date (FCEB)
- 2022-03-24
- Ransomware use
- Unknown
Required action
Apply updates per vendor instructions.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cisco ios | = 15.1(2)gc | No fix listed |
| cisco ios | = 15.1(2)gc1 | No fix listed |
| cisco ios | = 15.1(2)gc2 | No fix listed |
| cisco ios | = 15.1(4)gc | No fix listed |
| cisco ios | = 15.1(4)gc1 | No fix listed |
| cisco ios | = 15.1(4)gc2 | No fix listed |
| cisco ios | = 15.2(1)gc | No fix listed |
| cisco ios | = 15.2(1)gc1 | No fix listed |
| cisco ios | = 15.2(1)gc2 | No fix listed |
| cisco ios | = 15.2(2)gc | No fix listed |
| cisco ios | = 15.2(3)gc | No fix listed |
| cisco ios | = 15.2(3)gc1 | No fix listed |
| cisco ios | = 15.2(3r)gca | No fix listed |
| cisco ios | = 15.2(4)gc | No fix listed |
| cisco ios | = 15.2(4)gc1 | No fix listed |
| cisco ios | = 15.2(4)gc2 | No fix listed |
| cisco ios | = 15.2(4)gc3 | No fix listed |
| cisco ios | = 15.4(1)t | No fix listed |
| cisco ios | = 15.4(1)t1 | No fix listed |
| cisco ios | = 15.4(1)t2 | No fix listed |
| cisco ios | = 15.4(1)t3 | No fix listed |
| cisco ios | = 15.4(1)t4 | No fix listed |
| cisco ios | = 15.4(2)t | No fix listed |
| cisco ios | = 15.4(2)t1 | No fix listed |
| cisco ios | = 15.4(2)t2 | No fix listed |
Show 46 more
| Product | Affected versions | Fixed in |
|---|---|---|
| cisco ios | = 15.4(3)m | No fix listed |
| cisco ios | = 15.4(3)m1 | No fix listed |
| cisco ios | = 15.4(3)m2 | No fix listed |
| cisco ios | = 15.4(3)m2.2 | No fix listed |
| cisco ios | = 15.4(3)m3 | No fix listed |
| cisco ios | = 15.4(3)m4 | No fix listed |
| cisco ios | = 15.4(3)m5 | No fix listed |
| cisco ios | = 15.4(3)m6 | No fix listed |
| cisco ios | = 15.4(3)m6a | No fix listed |
| cisco ios | = 15.4(3)m7 | No fix listed |
| cisco ios xe | = 3.14.0s | No fix listed |
| cisco ios xe | = 3.14.1s | No fix listed |
| cisco ios xe | = 3.14.2s | No fix listed |
| cisco ios xe | = 3.14.3s | No fix listed |
| cisco ios xe | = 3.14.4s | No fix listed |
| cisco ios xe | = 3.15.0s | No fix listed |
| cisco ios xe | = 3.15.1cs | No fix listed |
| cisco ios xe | = 3.15.1s | No fix listed |
| cisco ios xe | = 3.15.2s | No fix listed |
| cisco ios xe | = 3.15.3s | No fix listed |
| cisco ios xe | = 3.15.4s | No fix listed |
| cisco ios xe | = 3.16.0cs | No fix listed |
| cisco ios xe | = 3.16.0s | No fix listed |
| cisco ios xe | = 3.16.1as | No fix listed |
| cisco ios xe | = 3.16.1s | No fix listed |
| cisco ios xe | = 3.16.2as | No fix listed |
| cisco ios xe | = 3.16.2bs | No fix listed |
| cisco ios xe | = 3.16.2s | No fix listed |
| cisco ios xe | = 3.16.3as | No fix listed |
| cisco ios xe | = 3.16.3s | No fix listed |
| cisco ios xe | = 3.16.4as | No fix listed |
| cisco ios xe | = 3.16.4bs | No fix listed |
| cisco ios xe | = 3.16.4ds | No fix listed |
| cisco ios xe | = 3.16.4s | No fix listed |
| cisco ios xe | = 3.16.5s | No fix listed |
| cisco ios xe | = 3.16.6s | No fix listed |
| cisco ios xe | = 3.17.0s | No fix listed |
| cisco ios xe | = 3.17.1as | No fix listed |
| cisco ios xe | = 3.17.1s | No fix listed |
| cisco ios xe | = 3.17.3s | No fix listed |
| cisco ios xe | = 3.18.0as | No fix listed |
| cisco ios xe | = 3.18.0s | No fix listed |
| cisco ios xe | = 3.18.1s | No fix listed |
| cisco ios xe | = 3.18.2s | No fix listed |
| cisco ios xe | = 3.18.3s | No fix listed |
| cisco ios xe | = 3.18.3vs | No fix listed |
References
- 100644 broken-link third-party-advisory vdb-entry
- 1039289 broken-link third-party-advisory vdb-entry
- tools.cisco.com mitigation vendor-advisory
- www.cisa.gov government-resource us-government-resource