Vulnerability · Published Aug 31, 2020 · Assigned by canonical

CVE-2020-15704pppd arbitrary file read information disclosure vulnerability

Medium 5.5

In plain English

A medium-severity information exposure in ppp from Canonical. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities).

Severity (CVSS 3.1)5.5Medium

Exploit odds (30 days)0.4%top 69.6% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

The modprobe child process in the ./debian/patches/load_ppp_generic_if_needed patch file incorrectly handled module loading. A local non-root attacker could exploit the MODPROBE_OPTIONS environment variable to read arbitrary root files. Fixed in 2.4.5-5ubuntu1.4, 2.4.5-5.1ubuntu2.3+esm2, 2.4.7-1+2ubuntu1.16.04.3, 2.4.7-2+2ubuntu1.3, 2.4.7-2+4.1ubuntu5.1, 2.4.7-2+4.1ubuntu6. Was ZDI-CAN-11504.

Affected products (as reported)

Vendor	Product	Versions
Canonical	ppp	2.4.5 – before 2.4.5-5ubuntu1.42.4.7 – before 2.4.7-1+2ubuntu1.16.04.3

Weakness: CWE-200 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

https://ubuntu.com/security/notices/USN-4451-1 vendor-advisory, x_refsource_UBUNTU
https://ubuntu.com/security/notices/USN-4451-2 vendor-advisory, x_refsource_UBUNTU