PT-2017-18955 · Cisco · Cisco Dpc3939

Chris Grayson + 2 · Published 2017-07-31 · Updated 2019-10-03 · CVE-2017-9485

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions Cisco DPC3939 version dpc3939-P20-18-v303r20421746-170221a-CMCST

Description The issue allows remote attackers to write arbitrary data to a known pathname, specifically /var/tmp/sess *, by leveraging the device's operation in UI dev mode.

Recommendations For Cisco DPC3939 version dpc3939-P20-18-v303r20421746-170221a-CMCST, consider disabling the UI dev mode as a temporary workaround to minimize the risk of exploitation. Restrict access to the /var/tmp/sess * pathname to prevent arbitrary data writes until a patch is available.

Exploit

Fix

Related Identifiers

CVE-2017-9485

Affected Products

Cisco Dpc3939

References · 3

• 🔥 https://github.com/BastilleResearch/CableTap/blob/master/doc/advisories/bastille-28.session-cookie-write.txt · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2017-9485 · Security Note
• https://osv.dev/vulnerability/CVE-2017-9485 · Vendor Advisory