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AlienVault OTX Malware

chroot in GNU coreutils, when used with --userspec, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.

CVE-2016-2781 is a medium-severity local privilege escalation vulnerability found in the GNU coreutils package, specifically involving the use of the chroot command with the --userspec option. The vulnerability arises due to improper handling of the TIOCSTI ioctl call, which allows a local user to inject characters into the terminal's input buffer. This can enable an attacker to escape from a restricted chroot jail environment back to the parent session, effectively breaking the isolation that chroot is intended to provide. The attack requires local access with at least limited privileges (PR:L), and user interaction (UI:R) is necessary to trigger the exploit. The vulnerability impacts confidentiality and integrity by allowing unauthorized command execution outside the chroot environment, but does not affect availability. The CVSS v3.1 score is 4.6, reflecting a medium severity with low attack complexity but requiring local access and user interaction. No specific affected versions or vendor/project details are provided, but the vulnerability is tied to GNU coreutils, a widely used package in Unix-like operating systems. No known exploits in the wild have been reported, and no patches are linked in the provided data, although this vulnerability was published in early 2017 and likely addressed in subsequent updates of coreutils. The underlying weakness is categorized under CWE-20 (Improper Input Validation), indicating that the coreutils package does not adequately validate or restrict the use of the TIOCSTI ioctl call in the context of chroot with --userspec, enabling input injection attacks that bypass chroot restrictions.

Detailed information about CVE-2016-2781: n/a in n/a affecting n/a n/a. Get real-time updates, technical details, and mitigation strategies.

CVE-2016-2781: n/a in n/a - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2016-2781: n/a in n/a

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