CVE-2019-19126

On the x86-64 architecture, the GNU C Library (aka glibc) before 2.31 fails to ignore the LD_PREFER_MAP_32BIT_EXEC environment variable during program execution after a security transition, allowing local attackers to restrict the possible mapping addresses for loaded libraries and thus bypass ASLR for a setuid program.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
3.3 LOW
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
mitreCNA
---
---
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 5%
VendorProductVersion
gnuglibc
𝑥
< 2.31
canonicalubuntu_linux
16.04
canonicalubuntu_linux
18.04
canonicalubuntu_linux
19.10
debiandebian_linux
10.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
glibc
bullseye
2.31-13+deb11u11
fixed
jessie
not-affected
bullseye (security)
2.31-13+deb11u10
fixed
bookworm
2.36-9+deb12u8
fixed
bookworm (security)
2.36-9+deb12u7
fixed
sid
2.40-3
fixed
trixie
2.40-3
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
eglibc
focal
dne
eoan
dne
disco
dne
bionic
dne
xenial
dne
trusty
not-affected
glibc
focal
not-affected
eoan
Fixed 2.30-0ubuntu2.2
released
disco
ignored
bionic
Fixed 2.27-3ubuntu1.2
released
xenial
Fixed 2.23-0ubuntu11.2
released
trusty
dne
Common Weakness Enumeration
References
https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4FQ5LC6JOYSOYFPRUZ4S45KL6IP3RPPZ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZFJ5E7NWOL6ROE5QVICHKIOUGCPFJVUH/
https://sourceware.org/bugzilla/show_bug.cgi?id=25204
https://usn.ubuntu.com/4416-1/
https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4FQ5LC6JOYSOYFPRUZ4S45KL6IP3RPPZ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZFJ5E7NWOL6ROE5QVICHKIOUGCPFJVUH/
https://sourceware.org/bugzilla/show_bug.cgi?id=25204
https://usn.ubuntu.com/4416-1/