7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.1 High
AI Score
Confidence
High
0.014 Low
EPSS
Percentile
86.5%
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.
[
{
"versions": [
{
"status": "affected",
"version": "2.34",
"lessThan": "2.39",
"versionType": "custom"
}
],
"packageName": "glibc",
"collectionURL": "https://sourceware.org/git/glibc.git",
"defaultStatus": "unaffected"
},
{
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "glibc",
"defaultStatus": "affected",
"versions": [
{
"version": "0:2.28-225.el8_8.6",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
],
"cpes": [
"cpe:/a:redhat:enterprise_linux:8::crb",
"cpe:/o:redhat:enterprise_linux:8::baseos",
"cpe:/a:redhat:enterprise_linux:8::appstream"
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "glibc",
"defaultStatus": "affected",
"versions": [
{
"version": "0:2.28-225.el8_8.6",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
],
"cpes": [
"cpe:/a:redhat:enterprise_linux:8::crb",
"cpe:/o:redhat:enterprise_linux:8::baseos",
"cpe:/a:redhat:enterprise_linux:8::appstream"
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8.6 Extended Update Support",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "glibc",
"defaultStatus": "affected",
"versions": [
{
"version": "0:2.28-189.6.el8_6",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
],
"cpes": [
"cpe:/o:redhat:rhel_eus:8.6::baseos",
"cpe:/a:redhat:rhel_eus:8.6::crb",
"cpe:/a:redhat:rhel_eus:8.6::appstream",
"cpe:/o:redhat:rhev_hypervisor:4.4::el8"
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "glibc",
"defaultStatus": "affected",
"versions": [
{
"version": "0:2.34-60.el9_2.7",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
],
"cpes": [
"cpe:/o:redhat:enterprise_linux:9::baseos",
"cpe:/a:redhat:enterprise_linux:9::crb",
"cpe:/a:redhat:enterprise_linux:9::appstream"
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "glibc",
"defaultStatus": "affected",
"versions": [
{
"version": "0:2.34-60.el9_2.7",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
],
"cpes": [
"cpe:/o:redhat:enterprise_linux:9::baseos",
"cpe:/a:redhat:enterprise_linux:9::crb",
"cpe:/a:redhat:enterprise_linux:9::appstream"
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 9.0 Extended Update Support",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "glibc",
"defaultStatus": "affected",
"versions": [
{
"version": "0:2.34-28.el9_0.4",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
],
"cpes": [
"cpe:/a:redhat:rhel_eus:9.0::appstream",
"cpe:/a:redhat:rhel_eus:9.0::crb",
"cpe:/o:redhat:rhel_eus:9.0::baseos"
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 8",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "glibc",
"defaultStatus": "affected",
"versions": [
{
"version": "0:2.28-189.6.el8_6",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
],
"cpes": [
"cpe:/o:redhat:rhel_eus:8.6::baseos",
"cpe:/a:redhat:rhel_eus:8.6::crb",
"cpe:/a:redhat:rhel_eus:8.6::appstream",
"cpe:/o:redhat:rhev_hypervisor:4.4::el8"
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 8",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "redhat-release-virtualization-host",
"defaultStatus": "affected",
"versions": [
{
"version": "0:4.5.3-10.el8ev",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
],
"cpes": [
"cpe:/o:redhat:rhev_hypervisor:4.4::el8"
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 8",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "redhat-virtualization-host",
"defaultStatus": "affected",
"versions": [
{
"version": "0:4.5.3-202312060823_8.6",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
],
"cpes": [
"cpe:/o:redhat:rhev_hypervisor:4.4::el8"
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 6",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "glibc",
"defaultStatus": "unaffected",
"cpes": [
"cpe:/o:redhat:enterprise_linux:6"
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 7",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "compat-glibc",
"defaultStatus": "unaffected",
"cpes": [
"cpe:/o:redhat:enterprise_linux:7"
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 7",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "glibc",
"defaultStatus": "unaffected",
"cpes": [
"cpe:/o:redhat:enterprise_linux:7"
]
}
]
packetstormsecurity.com/files/174986/glibc-ld.so-Local-Privilege-Escalation.html
packetstormsecurity.com/files/176288/Glibc-Tunables-Privilege-Escalation.html
seclists.org/fulldisclosure/2023/Oct/11
www.openwall.com/lists/oss-security/2023/10/03/2
www.openwall.com/lists/oss-security/2023/10/03/3
www.openwall.com/lists/oss-security/2023/10/05/1
www.openwall.com/lists/oss-security/2023/10/13/11
www.openwall.com/lists/oss-security/2023/10/14/3
www.openwall.com/lists/oss-security/2023/10/14/5
www.openwall.com/lists/oss-security/2023/10/14/6
access.redhat.com/errata/RHSA-2023:5453
access.redhat.com/errata/RHSA-2023:5454
access.redhat.com/errata/RHSA-2023:5455
access.redhat.com/errata/RHSA-2023:5476
access.redhat.com/errata/RHSA-2024:0033
access.redhat.com/security/cve/CVE-2023-4911
bugzilla.redhat.com/show_bug.cgi?id=2238352
lists.fedoraproject.org/archives/list/[email protected]/message/4DBUQRRPB47TC3NJOUIBVWUGFHBJAFDL/
lists.fedoraproject.org/archives/list/[email protected]/message/DFG4P76UHHZEWQ26FWBXG76N2QLKKPZA/
lists.fedoraproject.org/archives/list/[email protected]/message/NDAQWHTSVOCOZ5K6KPIWKRT3JX4RTZUR/
security.gentoo.org/glsa/202310-03
security.netapp.com/advisory/ntap-20231013-0006/
www.debian.org/security/2023/dsa-5514
www.qualys.com/2023/10/03/cve-2023-4911/looney-tunables-local-privilege-escalation-glibc-ld-so.txt
www.qualys.com/cve-2023-4911/
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.1 High
AI Score
Confidence
High
0.014 Low
EPSS
Percentile
86.5%