7.8
High
Exploited
CVE-2023-4911 GNU C Library Buffer Overflow Vulnerability
Active exploitation observed
· CISA KEV catalogue
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Ransomware campaigns
Not observed so far
Weakness
CWE-122
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 8 | Versions not published | |
| Red Hat Enterprise Linux 8.6 Extended Update Support | Versions not published | |
| Red Hat Enterprise Linux 9 | Versions not published | |
| Red Hat Enterprise Linux 9.0 Extended Update Support | Versions not published | |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 | Versions not published | |
| Red Hat Enterprise Linux 6 | Versions not published | |
| Red Hat Enterprise Linux 7 | Versions not published | |
| SIMATIC S7-1500 CPU 1518-4 PN/DP MFP 3.1 | 3.1.5 → latest | No fix stated |
| SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP 3.1 | 3.1.5 → latest | No fix stated |
Show the 2 other branches Hide the 2 other branches
| Product | Affected versions | Fixed in |
|---|---|---|
| SIPLUS S7-1500 CPU 1518-4 PN/DP MFP 3.1 | 3.1.5 → latest | No fix stated |
| SIMATIC S7-1500 TM MFP - GNU/Linux subsystem 1.1 | earliest → < 1.1 | 1.1 |
References
- RHSA-2023:5453 access.redhat.com
- RHSA-2023:5454 access.redhat.com
- RHSA-2023:5455 access.redhat.com
- RHSA-2023:5476 access.redhat.com
- RHSA-2024:0033 access.redhat.com
- access.redhat.com access.redhat.com
- RHBZ#2238352 bugzilla.redhat.com
- www.qualys.com www.qualys.com
- www.qualys.com www.qualys.com
Timeline
- Published
- Added to the KEV catalogue
- Last modified
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