CVE-2019-15903 (GCVE-0-2019-15903)
Vulnerability from cvelistv5 – Published: 2019-09-04 05:59 – Updated: 2025-05-30 19:27
VLAI
EPSS
VEX
Summary
In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early; a consecutive call to XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber) then resulted in a heap-based buffer over-read.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-30 19:27 UTC
CWE
- n/a
- CWE-125 - Out-of-bounds Read
Assigner
References
59 references
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"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
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}
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"name": "openSUSE-SU-2019:2424",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00002.html"
},
{
"name": "openSUSE-SU-2019:2425",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00003.html"
},
{
"name": "RHSA-2019:3756",
"refsource": "REDHAT",
"url": "https://access.redhat.com/errata/RHSA-2019:3756"
},
{
"name": "openSUSE-SU-2019:2447",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00013.html"
},
{
"name": "openSUSE-SU-2019:2451",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00016.html"
},
{
"name": "openSUSE-SU-2019:2452",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00018.html"
},
{
"name": "openSUSE-SU-2019:2459",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00017.html"
},
{
"name": "openSUSE-SU-2019:2464",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00019.html"
},
{
"name": "[debian-lts-announce] 20191110 [SECURITY] [DLA 1987-1] firefox-esr security update",
"refsource": "MLIST",
"url": "https://lists.debian.org/debian-lts-announce/2019/11/msg00006.html"
},
{
"name": "20191118 [SECURITY] [DSA 4571-1] thunderbird security update",
"refsource": "BUGTRAQ",
"url": "https://seclists.org/bugtraq/2019/Nov/24"
},
{
"name": "DSA-4571",
"refsource": "DEBIAN",
"url": "https://www.debian.org/security/2019/dsa-4571"
},
{
"name": "[debian-lts-announce] 20191118 [SECURITY] [DLA 1997-1] thunderbird security update",
"refsource": "MLIST",
"url": "https://lists.debian.org/debian-lts-announce/2019/11/msg00017.html"
},
{
"name": "GLSA-201911-08",
"refsource": "GENTOO",
"url": "https://security.gentoo.org/glsa/201911-08"
},
{
"name": "USN-4202-1",
"refsource": "UBUNTU",
"url": "https://usn.ubuntu.com/4202-1/"
},
{
"name": "20191211 APPLE-SA-2019-12-10-8 watchOS 6.1.1",
"refsource": "BUGTRAQ",
"url": "https://seclists.org/bugtraq/2019/Dec/17"
},
{
"name": "20191211 APPLE-SA-2019-12-10-5 tvOS 13.3",
"refsource": "BUGTRAQ",
"url": "https://seclists.org/bugtraq/2019/Dec/21"
},
{
"name": "20191211 APPLE-SA-2019-12-10-3 macOS Catalina 10.15.2, Security Update 2019-002 Mojave, Security Update 2019-007 High Sierra",
"refsource": "BUGTRAQ",
"url": "https://seclists.org/bugtraq/2019/Dec/23"
},
{
"name": "20191213 APPLE-SA-2019-12-10-1 iOS 13.3 and iPadOS 13.3",
"refsource": "FULLDISC",
"url": "http://seclists.org/fulldisclosure/2019/Dec/23"
},
{
"name": "20191213 APPLE-SA-2019-12-10-3 macOS Catalina 10.15.2, Security Update 2019-002 Mojave, Security Update 2019-007 High Sierra",
"refsource": "FULLDISC",
"url": "http://seclists.org/fulldisclosure/2019/Dec/26"
},
{
"name": "20191213 APPLE-SA-2019-12-10-8 watchOS 6.1.1",
"refsource": "FULLDISC",
"url": "http://seclists.org/fulldisclosure/2019/Dec/30"
},
{
"name": "20191213 APPLE-SA-2019-12-10-5 tvOS 13.3",
"refsource": "FULLDISC",
"url": "http://seclists.org/fulldisclosure/2019/Dec/27"
},
{
"name": "openSUSE-SU-2020:0010",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00008.html"
},
{
"name": "openSUSE-SU-2020:0086",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html"
},
{
"name": "USN-4335-1",
"refsource": "UBUNTU",
"url": "https://usn.ubuntu.com/4335-1/"
},
{
"name": "https://www.oracle.com/security-alerts/cpuapr2020.html",
"refsource": "MISC",
"url": "https://www.oracle.com/security-alerts/cpuapr2020.html"
},
{
"name": "https://www.oracle.com/security-alerts/cpuoct2020.html",
"refsource": "MISC",
"url": "https://www.oracle.com/security-alerts/cpuoct2020.html"
},
{
"name": "https://github.com/libexpat/libexpat/issues/317",
"refsource": "MISC",
"url": "https://github.com/libexpat/libexpat/issues/317"
},
{
"name": "https://github.com/libexpat/libexpat/pull/318",
"refsource": "MISC",
"url": "https://github.com/libexpat/libexpat/pull/318"
},
{
"name": "https://github.com/libexpat/libexpat/commit/c20b758c332d9a13afbbb276d30db1d183a85d43",
"refsource": "MISC",
"url": "https://github.com/libexpat/libexpat/commit/c20b758c332d9a13afbbb276d30db1d183a85d43"
},
{
"name": "https://github.com/libexpat/libexpat/issues/342",
"refsource": "CONFIRM",
"url": "https://github.com/libexpat/libexpat/issues/342"
},
{
"name": "http://packetstormsecurity.com/files/154503/Slackware-Security-Advisory-expat-Updates.html",
"refsource": "MISC",
"url": "http://packetstormsecurity.com/files/154503/Slackware-Security-Advisory-expat-Updates.html"
},
{
"name": "https://security.netapp.com/advisory/ntap-20190926-0004/",
"refsource": "CONFIRM",
"url": "https://security.netapp.com/advisory/ntap-20190926-0004/"
},
{
"name": "http://packetstormsecurity.com/files/154927/Slackware-Security-Advisory-python-Updates.html",
"refsource": "MISC",
"url": "http://packetstormsecurity.com/files/154927/Slackware-Security-Advisory-python-Updates.html"
},
{
"name": "http://packetstormsecurity.com/files/154947/Slackware-Security-Advisory-mozilla-firefox-Updates.html",
"refsource": "MISC",
"url": "http://packetstormsecurity.com/files/154947/Slackware-Security-Advisory-mozilla-firefox-Updates.html"
},
{
"name": "https://support.apple.com/kb/HT210788",
"refsource": "CONFIRM",
"url": "https://support.apple.com/kb/HT210788"
},
{
"name": "https://support.apple.com/kb/HT210790",
"refsource": "CONFIRM",
"url": "https://support.apple.com/kb/HT210790"
},
{
"name": "https://support.apple.com/kb/HT210785",
"refsource": "CONFIRM",
"url": "https://support.apple.com/kb/HT210785"
},
{
"name": "https://support.apple.com/kb/HT210789",
"refsource": "CONFIRM",
"url": "https://support.apple.com/kb/HT210789"
},
{
"name": "https://support.apple.com/kb/HT210793",
"refsource": "CONFIRM",
"url": "https://support.apple.com/kb/HT210793"
},
{
"name": "https://support.apple.com/kb/HT210795",
"refsource": "CONFIRM",
"url": "https://support.apple.com/kb/HT210795"
},
{
"name": "https://support.apple.com/kb/HT210794",
"refsource": "CONFIRM",
"url": "https://support.apple.com/kb/HT210794"
},
{
"name": "https://www.tenable.com/security/tns-2021-11",
"refsource": "CONFIRM",
"url": "https://www.tenable.com/security/tns-2021-11"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"assignerShortName": "mitre",
"cveId": "CVE-2019-15903",
"datePublished": "2019-09-04T05:59:16.000Z",
"dateReserved": "2019-09-04T00:00:00.000Z",
"dateUpdated": "2025-05-30T19:27:19.904Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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