Improper input validation in Cisco iOS Xr
CVE-2017-12355
A vulnerability in the Local Packet Transport Services (LPTS) ingress frame-processing functionality of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause one of the LPTS processes on an affected system to restart unexpectedly, resulting in a brief denial of service (DoS) condition. The vulnerability is due to incomplete LPTS frame validation by the affected software. An attacker could exploit this vulnerability by sending crafted XML requests to the management interface of an affected system. A successful exploit could allow the attacker to cause one of the LPTS processes on the affected system to restart unexpectedly, which would impact LPTS traffic and cause a brief DoS condition while the process restarts. Cisco Bug IDs: CSCvf76332.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.031 (87.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.030 · newest: 0.031 · change: +0.001
Affected products
- Cisco iOS Xr — versions 6.4.1_base
- Cisco iOS Xr — versions Cisco IOS XR
Weakness classification (CWE)
References
- www.securityfocus.com/bid/101989 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securitytracker.com/id/1039927 (VDB Entry, Third Party Advisory, vdb-entry)
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129… (Vendor Advisory)
Frequently asked questions
- What is CVE-2017-12355?
- CVE-2017-12355 is a medium-severity vulnerability in Cisco iOS Xr, classified under CWE-399. CVSS score: 5.3/10. Published 2017-11-30.
- How severe is CVE-2017-12355?
- Medium severity. CVSS v3 base score is 5.3 out of 10.