High severity · published Oct 3, 2023
CVE-2023-4911
Glibc: buffer overflow in ld.so leading to privilege escalation
In wildKEV
7.8
CVSS
63.8%
EPSS
Yes
On KEV
Description
A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)63.8% · higher than 99% of CVEs
Exploited in the wildYes
CISA KEVListed Nov 21, 2023
Federal remediation dueDec 12, 2023
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat Enterprise Linux 8 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 8.6 Extended Update Support · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 9 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 9.0 Extended Update Support · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 · Red Hat
All versions, or not specified · source: vendor
BO
Bootstrap OS · Netapp
All versions, or not specified · source: NVD
CL
Codeready Linux Builder · Redhat
9.0 · source: NVD
CL
Codeready Linux Builder Eus · Redhat
8.6; 9.2; 9.4; 9.6 · source: NVD
CL
Codeready Linux Builder For Arm64 · Redhat
9.0_aarch64 · source: NVD
CL
Codeready Linux Builder For Arm64 Eus · Redhat
8.6; 9.2_aarch64; 9.4_aarch64; 9.6_aarch64 · source: NVD
CL
Codeready Linux Builder For Ibm Z Systems · Redhat
9.0_s390x · source: NVD
CL
Codeready Linux Builder For Ibm Z Systems Eus · Redhat
8.6; 9.2_s390x; 9.4_s390x; 9.6_s390x · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-4911
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-4911
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
vendor-advisory
https://access.redhat.com/errata/RHSA-2023:5453
vendor-advisory
https://access.redhat.com/errata/RHSA-2023:5454
vendor-advisory
https://access.redhat.com/errata/RHSA-2023:5455
vendor-advisory
https://access.redhat.com/errata/RHSA-2023:5476
vendor-advisory
https://access.redhat.com/errata/RHSA-2024:0033
vdb-entry
https://access.redhat.com/security/cve/CVE-2023-4911
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