CVE-2023-4527
When the getaddrinfo function is called with the AF_UNSPEC address family and the system is configured with no-aaaa mode via /etc/resolv.conf, a DNS response via TCP larger than 2048 bytes can potentially disclose stack contents through the function…
Does this matter?
Lower severity and a low EPSS score (1.50%). Track it; it rarely justifies an emergency change on its own.
Description
A flaw was found in glibc. When the getaddrinfo function is called with the AF_UNSPEC address family and the system is configured with no-aaaa mode via /etc/resolv.conf, a DNS response via TCP larger than 2048 bytes can potentially disclose stack contents through the function returned address data, and may cause a crash.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H
- EPSS
- 1.50% probability · 73th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-121, CWE-125
- Affected
- gnu/glibc · redhat/codeready linux builder eus · redhat/codeready linux builder eus for power little endian · redhat/codeready linux builder eus for power little endian eus · redhat/codeready linux builder for arm64 · redhat/codeready linux builder for arm64 eus · redhat/codeready linux builder for ibm z systems · redhat/codeready linux builder for ibm z systems eus · redhat/enterprise linux · redhat/enterprise linux eus · redhat/enterprise linux for arm 64 · redhat/enterprise linux for arm 64 eus · redhat/enterprise linux for ibm z systems · redhat/enterprise linux for ibm z systems eus · redhat/enterprise linux for ibm z systems eus s390x · redhat/enterprise linux for ibm z systems s390x · redhat/enterprise linux for power little endian · redhat/enterprise linux for power little endian eus · redhat/enterprise linux server aus · redhat/enterprise linux server for power little endian update services for sap solutions · +7 more
- Source
- secalert@redhat.com
References
- https://access.redhat.com/errata/RHSA-2023:5453Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:5455Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-4527Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2234712Exploit, Issue Tracking, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2023/09/25/1Mailing List, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:5453Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:5455Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-4527Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2234712Exploit, Issue Tracking, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4DBUQRRPB47TC3NJOUIBVWUGFHBJAFDL/Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DFG4P76UHHZEWQ26FWBXG76N2QLKKPZA/Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAQWHTSVOCOZ5K6KPIWKRT3JX4RTZUR/Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202310-03Third Party Advisory
- https://security.netapp.com/advisory/ntap-20231116-0012/Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://cert-portal.siemens.com/productcert/html/ssa-831302.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.