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CVE-2023-6246 is a heap-based buffer overflow in the GNU C Library (glibc) within the __vsyslog_internal function, which is reached through the syslog and vsyslog logging interfaces. The flaw is triggered when openlog has not been called, or when it is called with a NULL ident argument, causing the implementation to derive the logging identifier from the program name. If the basename of argv[0] exceeds 1024 bytes, insufficient bounds handling can lead to a heap overflow during syslog message processing. The issue affects glibc 2.36 and later and can result in application termination or, in suitable local attack scenarios, privilege escalation.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).
This repository contains a local privilege escalation exploit targeting Fedora Workstation 38. The exploit consists of a Python script (exploit.py) that sets up specific environment variables and invokes /usr/bin/su with crafted arguments, likely to trigger a vulnerability in the way environment or arguments are handled. The run.sh script orchestrates the attack by creating a specially named directory and compiling a C shared object (shellcode.c) that, when loaded, sets UID and GID to 0 and spawns a root shell (/bin/sh). The exploit is operational and provides a root shell if successful. The attack vector is local, requiring shell access to the target system. The exploit manipulates file paths and environment variables to influence the behavior of PAM or NSS modules during authentication. The repository is structured with clear separation between the exploit logic (exploit.py), the payload (shellcode.c), and the orchestration script (run.sh).
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1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.