CVE-2023-6780
PUBLISHEDGlibc: integer overflow in __vsyslog_internal()
Recommended Action
Track for updates. Assess relevance to your asset inventory and enrichment workflows.
At a Glance
An integer overflow was found in the __vsyslog_internal function of the glibc library. This function is called by the syslog and vsyslog functions. This issue occurs when these functions are called with a very long message, leading to an incorrect calculation of the buffer size to store the message, resulting in undefined behavior. This issue affects glibc 2.37 and newer.
- CVE Published
- Jan 31, 2024
- —
- —
- CVSS
- 5.3 Medium
- EPSS
- —
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| Siemens |
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
|
V3.1.5 to < * |
Affected |
| Siemens |
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
|
V3.1.5 to < * |
Affected |
| Siemens |
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
|
V3.1.5 to < * |
Affected |
| Siemens |
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
|
V3.1.5 to < * |
Affected |
| Siemens |
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
|
V3.1.5 to < * |
Affected |
| n/a |
glibc
|
2.39 |
Unaffected |
| Red Hat |
Red Hat Enterprise Linux 6
|
All versions (default: unaffected) |
Unaffected |
| Red Hat |
Red Hat Enterprise Linux 6
|
All versions (default: unaffected) |
Unaffected |
| Red Hat |
Red Hat Enterprise Linux 7
|
All versions (default: unaffected) |
Unaffected |
| Red Hat |
Red Hat Enterprise Linux 7
|
All versions (default: unaffected) |
Unaffected |
| Red Hat |
Red Hat Enterprise Linux 8
|
All versions (default: unaffected) |
Unaffected |
| Red Hat |
Red Hat Enterprise Linux 9
|
All versions (default: unaffected) |
Unaffected |
| Fedora |
Fedora
|
All versions (default: affected) |
Affected |
CVE References
- http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html CVE Record
- http://seclists.org/fulldisclosure/2024/Feb/3 CVE Record
- https://access.redhat.com/security/cve/CVE-2023-6780 CVE Record
- https://bugzilla.redhat.com/show_bug.cgi?id=2254396 CVE Record
- https://lists.fedoraproject.org/archives/list/[email protected]/message/D2FIH77VHY3KCRROCXOT6L27WMZXSJ2G/ CVE Record
- https://lists.fedoraproject.org/archives/list/[email protected]/message/MWQ6BZJ6CV5UAW4VZSKJ6TO4KIW2KWAQ/ CVE Record
- https://security.gentoo.org/glsa/202402-01 CVE Record
- https://www.openwall.com/lists/oss-security/2024/01/30/6 CVE Record
- https://www.qualys.com/2024/01/30/cve-2023-6246/syslog.txt CVE Record
Recommended Actions
- Track for updates. Assess relevance to your asset inventory and enrichment workflows.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users via the Pro API.
Learn About Virtual PatchesCVSS Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Exploitation Status
No exploitation signals recorded yet.
Weaknesses (CWE)
-
Incorrect Calculation of Buffer Size
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
14:08 UTC over 2 years ago14:08 UTC · over 2 years ago
CVE published
Vulnerability disclosed publicly
-
14:37 UTC over 2 years ago14:37 UTC · over 2 years ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2023-6780
{
"cve_id": "CVE-2023-6780",
"title": "Glibc: integer overflow in __vsyslog_internal()",
"affected_vendor": "n/a, Red Hat, Fedora",
"affected_product": "glibc, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Fedora",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": null,
"cvss_score": 5.3,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": false,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}