CVE-2017-16997
HIGH 7.8EPSS 2.9%
elf/dl-load.c in the GNU C Library (aka glibc or libc6) 2.19 through 2.26 mishandles RPATH and RUNPATH containing $ORIGIN for a privileged (setuid or AT_SECURE) program, which allows local users to gain privileges via a Trojan horse library in the current working directory, related to the fillin_rpath and decompose_rpath functions. This is associated with misinterpretion of an empty RPATH/RUNPATH token as the "./" directory. NOTE: this configuration of RPATH/RUNPATH for a privileged program is apparently very uncommon; most likely, no such program is shipped with any common Linux distribution.
- Affected
- glibc 2.19 through 2.26
- CVSS v3.0 NVD
- 7.8 HIGH
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS v2.0 NVD
- 9.3 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C - EPSS
- 2.90% chance of exploitation in the next 30 days, 87th percentile
- Published
- 2017-12-18
- Updated
- 2024-08-05
Proof-of-concept exploits (1)
- Xiami2012/CVE-2017-16997-poc0★ · 2018-01-03
Security advisories
- http://www.securityfocus.com/bid/102228
- https://access.redhat.com/errata/RHBA-2019:0327
- https://access.redhat.com/errata/RHSA-2018:3092
- https://bugs.debian.org/884615
- https://sourceware.org/bugzilla/show_bug.cgi?id=22625
- https://sourceware.org/ml/libc-alpha/2017-12/msg00528.html