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CVE-2020-15702

Status Candidate

Overview

TOCTOU Race Condition vulnerability in apport allows a local attacker to escalate privileges and execute arbitrary code. An attacker may exit the crashed process and exploit PID recycling to spawn a root process with the same PID as the crashed process, which can then be used to escalate privileges. Fixed in 2.20.1-0ubuntu2.24, 2.20.9 versions prior to 2.20.9-0ubuntu7.16 and 2.20.11 versions prior to 2.20.11-0ubuntu27.6. Was ZDI-CAN-11234.

Related Files

Ubuntu Security Notice USN-4449-2
Posted Sep 3, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4449-2 - USN-4449-1 fixed several vulnerabilities in Apport. This update provides the corresponding update for Ubuntu 14.04 ESM. Ryota Shiga working with Trend Micro

tags | advisory, arbitrary, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2020-11936, CVE-2020-15701, CVE-2020-15702
MD5 | 9985503545bb85c13095d2aff92b19d8
Ubuntu Security Notice USN-4449-1
Posted Aug 5, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4449-1 - Ryota Shiga discovered that Apport incorrectly dropped privileges when making certain D-Bus calls. A local attacker could use this issue to read arbitrary files. Seong-Joong Kim discovered that Apport incorrectly parsed configuration files. A local attacker could use this issue to cause Apport to crash, resulting in a denial of service. Ryota Shiga discovered that Apport incorrectly implemented certain checks. A local attacker could use this issue to escalate privileges and run arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, local
systems | linux, ubuntu
advisories | CVE-2020-11936, CVE-2020-15701, CVE-2020-15702
MD5 | ccdc98754ed6d235718171b799686bca
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