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CVE-2020-15704

Status Candidate

Overview

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.

Related Files

Ubuntu Security Notice USN-4451-2
Posted Aug 6, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4451-2 - USN-4451-1 fixed a vulnerability in ppp. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. Thomas Chauchefoin discovered that ppp incorrectly handled module loading. A local attacker could use this issue to load arbitrary kernel modules and possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-15704
SHA-256 | c68ad231253f0d6c22503e9592ba3197a3976dd3f7f4c996e8cfd1b3669e37e1
Ubuntu Security Notice USN-4451-1
Posted Aug 5, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4451-1 - Thomas Chauchefoin discovered that ppp incorrectly handled module loading. A local attacker could use this issue to load arbitrary kernel modules and possibly execute arbitrary code.

tags | advisory, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-15704
SHA-256 | d8bcbdd1beaa0d0fcdc5862b49dffd945b7c1a538638b2c1ef7030bb15d7b570
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