Debian Security Bug TrackerDEBIANCVE:CVE-2023-4806CVE-2023-4806
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
0.001 Low
EPSS
Percentile
41.0%
A flaw was found in glibc. In an extremely rare situation, the getaddrinfo function may access memory that has been freed, resulting in an application crash. This issue is only exploitable when a NSS module implements only the nss_gethostbyname2_r and nss_getcanonname_r hooks without implementing the nss*_gethostbyname3_r hook. The resolved name should return a large number of IPv6 and IPv4, and the call to the getaddrinfo function should have the AF_INET6 address family with AI_CANONNAME, AI_ALL and AI_V4MAPPED as flags.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 12 | all | glibc | < 2.36-9+deb12u3 | glibc_2.36-9+deb12u3_all.deb |
| Debian | 11 | all | glibc | <= 2.31-13+deb11u10 | glibc_2.31-13+deb11u10_all.deb |
| Debian | 999 | all | glibc | < 2.37-10 | glibc_2.37-10_all.deb |
| Debian | 13 | all | glibc | < 2.37-10 | glibc_2.37-10_all.deb |
Related
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
0.001 Low
EPSS
Percentile
41.0%