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| Vulnerability ID | VCID-gy9w-16kr-aaaf |
| Aliases |
CVE-2010-3847
|
| Summary | elf/dl-load.c in ld.so in the GNU C Library (aka glibc or libc6) through 2.11.2, and 2.12.x through 2.12.1, does not properly handle a value of $ORIGIN for the LD_AUDIT environment variable, which allows local users to gain privileges via a crafted dynamic shared object (DSO) located in an arbitrary directory. |
| Status | Published |
| Exploitability | 2.0 |
| Weighted Severity | 8.0 |
| Risk | 10.0 |
| Affected and Fixed Packages | Package Details |
| Data source | Exploit-DB |
|---|---|
| Date added | Oct. 18, 2010 |
| Description | GNU C library dynamic linker - '$ORIGIN' Expansion |
| Ransomware campaign use | Known |
| Source publication date | Oct. 18, 2010 |
| Exploit type | local |
| Platform | linux |
| Source update date | Oct. 18, 2010 |
| Data source | Metasploit |
|---|---|
| Description | This module attempts to gain root privileges on Linux systems by abusing a vulnerability in the GNU C Library (glibc) dynamic linker. glibc `ld.so` versions before 2.11.3, and 2.12.x before 2.12.2 does not properly restrict use of the `LD_AUDIT` environment variable when loading setuid executables which allows control over the `$ORIGIN` library search path resulting in execution of arbitrary shared objects. This module opens a file descriptor to the specified suid executable via a hard link, then replaces the hard link with a shared object before instructing the linker to execute the file descriptor, resulting in arbitrary code execution. The specified setuid binary must be readable and located on the same file system partition as the specified writable directory. This module has been tested successfully on: glibc 2.5 on CentOS 5.4 (x86_64); glibc 2.5 on CentOS 5.5 (x86_64); glibc 2.12 on Fedora 13 (i386); and glibc 2.5-49 on RHEL 5.5 (x86_64). Some versions of `ld.so`, such as the version shipped with Ubuntu 14, hit a failed assertion in `dl_open_worker` causing exploitation to fail. |
| Note | Stability: - crash-safe Reliability: - repeatable-session SideEffects: - artifacts-on-disk |
| Ransomware campaign use | Unknown |
| Source publication date | Oct. 18, 2010 |
| Platform | Linux |
| Source URL | https://github.com/rapid7/metasploit-framework/tree/master/modules/exploits/linux/local/glibc_origin_expansion_priv_esc.rb |
| Exploitability (E) | Access Vector (AV) | Access Complexity (AC) | Authentication (Au) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|
high functional unproven proof_of_concept not_defined |
local adjacent_network network |
high medium low |
multiple single none |
none partial complete |
none partial complete |
none partial complete |
| Percentile | 0.39305 |
| EPSS Score | 0.00089 |
| Published At | Nov. 1, 2024, midnight |
| Date | Actor | Action | Source | VulnerableCode Version |
|---|---|---|---|---|
| There are no relevant records. | ||||