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CVE-2023-4813

Glibc: potential use-after-free in gaih_inet()

MEDIUM
5.9
CVSS Score
Published: September 12, 2023 at 09:54 PM UTC
Updated: October 14, 2026 at 10:17 PM UTC
16 products affected across 4 vendorsFedoraEnterprise LinuxEnterprise Linux Server Aus· also runs on 5 platforms

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Severity
MEDIUM5.9
Exploit prediction
EPSS 2%

Description

A flaw was found in glibc. In an uncommon situation, the gaih_inet function may use memory that has been freed, resulting in an application crash. This issue is only exploitable when the getaddrinfo function is called and the hosts database in /etc/nsswitch.conf is configured with SUCCESS=continue or SUCCESS=merge.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Fedora· Fedora Projectrpm
95%
38
Glibc· Gnu
95%
v < 2.36
Affected range stops below 2.36, so it looks safe — our inference, not a vendor statement
Active IQ Unified Manager· NetAppnpm
95%
All versions
H300S Firmware· NetAppdrupal
95%
All versions
netapp-h300s (same device)
H410C Firmware· NetAppdrupal
95%
All versions
netapp-h410c (same device)
H410S Firmware· NetAppdrupal
95%
All versions
netapp-h410s (same device)
H500S Firmware· NetAppdrupal
95%
All versions
netapp-h500s (same device)
H700S Firmware· NetAppdrupal
95%
All versions
netapp-h700s (same device)
Enterprise Linux· Red Hatrpm
95%
8.09.0
Vendor states this is fixed in 0:2.28-189.8.el8_6 (unaffected)
Vendor states this is fixed in 0:2.28-225.el8_8.6 (unaffected)
Vendor states this is fixed in 0:2.34-100.el9 (unaffected)
Vendor states this is fixed in 0:2.34-60.el9_2.7 (unaffected)
Vendor states this is fixed in 6 (unknown)
Enterprise Linux Eus· Red Hatrpm
95%
8.89.2

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

References (9)

Vendor Advisoryx_refsource_REDHAT
Source: [email protected]
https://access.redhat.com/errata/RHBA-2024:2413
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2023:5453
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2023:5455
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2023:7409
VDB Entryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/security/cve/CVE-2023-4813
Issue Trackingx_refsource_REDHATPatchThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2237798
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2023/10/03/8
Source: af854a3a-2127-422b-91ae-364da2661108
https://security.netapp.com/advisory/ntap-20231110-0003/

CVSS

5.9MEDIUMredhat
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-416

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