CVE-2023-52426
published 2024-02-04CVE-2023-52426: libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time.
PriorityP422medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.39%
32.9th percentile
libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time.
Affected
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | expat | < expat 2.6.0-1 (forky) | expat 2.6.0-1 (forky) |
| debian | libxmltok | < expat 2.6.0-1 (forky) | expat 2.6.0-1 (forky) |
| libexpat_project | libexpat | <= 2.5.0 | — |
| msrc | azl3_expat_2.5.0-1_on_azure_linux_3.0 | — | — |
| msrc | azl3_expat_2.6.2-1_on_azure_linux_3.0 | — | — |
| msrc | azure_linux_3.0_arm | — | — |
| msrc | azure_linux_3.0_x64 | — | — |
| msrc | cbl2_expat_2.5.0-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_expat_2.6.2-2_on_cbl_mariner_2.0 | — | — |
| msrc | cbl_mariner_2.0_arm | — | — |
| msrc | cbl_mariner_2.0_x64 | — | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5LOW
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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CISA ICS
Siemens SINEC NMS
cisa_ics·2024-08-15·CVSS 7.0
[HIGH] Siemens SINEC NMS
ICS Advisory
##
Siemens SINEC NMS
Release DateAugust 15, 2024
Alert CodeICSA-24-228-06
Related topics:
Industrial Control System Vulnerabilities, Industrial Control Systems
As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens' ProductCERT Security Advisories (CERT Services | Services | Siemens Global).
View CSAF
## 1. EXECUTIVE SUMMARY
- CVSS v4 9.4
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: Siemens
- Equipment: SINEC NMS
- Vulnerabilities: Use After Free, Improper Input Validation, Deserialization of Untrusted Data, Improper Restriction of Operations
Microsoft
libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time.
vendor_msrc·2024-02-13·CVSS 5.5
CVE-2023-52426 [MEDIUM] CWE-776 libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time.
libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
mitre: mitre
Customer Action Required: Yes
Remediation:
Red Hat
expat: recursive XML entity expansion vulnerability
vendor_redhat·2024-02-04·CVSS 5.5
CVE-2023-52426 [MEDIUM] CWE-776 expat: recursive XML entity expansion vulnerability
expat: recursive XML entity expansion vulnerability
libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time.
A flaw was found in Expat (libexpat). If XML_DTD is undefined at compile time, a recursive XML Entity Expansion condition can be triggered. This issue may lead to a condition where data is expanded exponentially, which will quickly consume system resources and cause a denial of service.
Mitigation: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Package: expat (Red Hat Enterprise Linux 6) - Out of support scope
Package: expat (Red Hat Enterprise Linux
Debian
CVE-2023-52426: expat - libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undef...
vendor_debian·2023·CVSS 5.5
CVE-2023-52426 [MEDIUM] CVE-2023-52426: expat - libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undef...
libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time.
Scope: local
bookworm: open
bullseye: open
forky: resolved (fixed in 2.6.0-1)
sid: resolved (fixed in 2.6.0-1)
trixie: resolved (fixed in 2.6.0-1)
OSV
CVE-2023-52426: libexpat through 2
osv·2024-02-04·CVSS 5.5
CVE-2023-52426 [MEDIUM] CVE-2023-52426: libexpat through 2
libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time.
GHSA
GHSA-mp2w-hjcj-f5g9: libexpat through 2
ghsa_unreviewed·2024-02-04
CVE-2023-52426 [MEDIUM] CWE-776 GHSA-mp2w-hjcj-f5g9: libexpat through 2
libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time.
No detection rules found.
No public exploits indexed.
https://cwe.mitre.org/data/definitions/776.htmlhttps://github.com/libexpat/libexpat/commit/0f075ec8ecb5e43f8fdca5182f8cca4703da0404https://github.com/libexpat/libexpat/pull/777https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNRIHC7DVVRAIWFRGV23Y6UZXFBXSQDB/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WNUBSGZFEZOBHJFTAD42SAN4ATW2VEMV/https://security.netapp.com/advisory/ntap-20240307-0005/https://cwe.mitre.org/data/definitions/776.htmlhttps://github.com/libexpat/libexpat/commit/0f075ec8ecb5e43f8fdca5182f8cca4703da0404https://github.com/libexpat/libexpat/pull/777https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNRIHC7DVVRAIWFRGV23Y6UZXFBXSQDB/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WNUBSGZFEZOBHJFTAD42SAN4ATW2VEMV/https://lists.fedoraproject.org/archives/list/[email protected]/message/PNRIHC7DVVRAIWFRGV23Y6UZXFBXSQDB/https://security.netapp.com/advisory/ntap-20240307-0005/https://cert-portal.siemens.com/productcert/html/ssa-398330.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-784301.html
2024-02-04
Published