CVE-2013-4520 (GCVE-0-2013-4520)
Vulnerability from cvelistv5 – Published: 2013-12-14 20:00 – Updated: 2024-08-06 16:45
VLAI
EPSS
VEX
Summary
xslt.c in libxslt before 1.1.25 allows context-dependent attackers to cause a denial of service (crash) via a stylesheet that embeds a DTD, which causes a structure to be accessed as a different type. NOTE: this issue is due to an incomplete fix for CVE-2012-2825.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
8 references
| URL | Tags |
|---|---|
| http://seclists.org/oss-sec/2013/q4/239 | mailing-listx_refsource_MLIST |
| https://gitorious.org/libxslt/libxslt/commit/7089… | x_refsource_MISC |
| https://www.suse.com/support/update/announcement/… | vendor-advisoryx_refsource_SUSE |
| https://www.suse.com/support/update/announcement/… | vendor-advisoryx_refsource_SUSE |
| http://secunia.com/advisories/56072 | third-party-advisoryx_refsource_SECUNIA |
| https://bugzilla.novell.com/show_bug.cgi?id=849019 | x_refsource_CONFIRM |
| http://www.osvdb.org/99671 | vdb-entryx_refsource_OSVDB |
| http://seclists.org/oss-sec/2013/q4/238 | mailing-listx_refsource_MLIST |
Date Public
2013-11-05 00:00
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"value": "xslt.c in libxslt before 1.1.25 allows context-dependent attackers to cause a denial of service (crash) via a stylesheet that embeds a DTD, which causes a structure to be accessed as a different type. NOTE: this issue is due to an incomplete fix for CVE-2012-2825."
},
{
"lang": "es",
"value": "xslt.c en libxslt anterior a 1.1.25 permite a atacantes dependientes del contexto provocar una denegaci\u00f3n de servicio (ca\u00edda) a trav\u00e9s de una hoja de estilo embebida en una DTD, lo que hace que una estructura sea accesible como un tipo diferente. NOTA: este problema se debe a una soluci\u00f3n incompleta de CVE-2012-2825."
}
],
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"lastModified": "2024-11-21T01:55:43.860",
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"acInsufInfo": false,
"baseSeverity": "MEDIUM",
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"baseScore": 4.3,
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"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
"version": "2.0"
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"exploitabilityScore": 8.6,
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"source": "nvd@nist.gov",
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"criteria": "cpe:2.3:a:xmlsoft:libxslt:1.1.4:*:*:*:*:*:*:*",
"matchCriteriaId": "04167292-B8A5-4CE2-AE7B-70FD2BDE5724",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:xmlsoft:libxslt:1.1.5:*:*:*:*:*:*:*",
"matchCriteriaId": "3A663FD5-6694-4203-A0B8-405121A6B346",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:xmlsoft:libxslt:1.1.6:*:*:*:*:*:*:*",
"matchCriteriaId": "1614DAE5-A84E-4898-B9E0-E4F5DD5D17AD",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:xmlsoft:libxslt:1.1.7:*:*:*:*:*:*:*",
"matchCriteriaId": "493B79B8-74A0-4089-BBA5-435C3B549928",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:xmlsoft:libxslt:1.1.8:*:*:*:*:*:*:*",
"matchCriteriaId": "CBFCEA36-7573-491B-8438-4E3FDF8E97ED",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:xmlsoft:libxslt:1.1.9:*:*:*:*:*:*:*",
"matchCriteriaId": "EF38997D-634C-423C-BD82-44E74A99D8DD",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:xmlsoft:libxslt:1.1.10:*:*:*:*:*:*:*",
"matchCriteriaId": "A9B4CF5A-150E-4814-BA15-EF9FB30AD0CC",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:xmlsoft:libxslt:1.1.11:*:*:*:*:*:*:*",
"matchCriteriaId": "9D4401FF-84D8-4AD5-BAED-978E31E5DADB",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:xmlsoft:libxslt:1.1.12:*:*:*:*:*:*:*",
"matchCriteriaId": "CC004874-3C5D-4932-AD5B-BE7156D7D13E",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:xmlsoft:libxslt:1.1.13:*:*:*:*:*:*:*",
"matchCriteriaId": "269892E0-1ABA-4D0F-8266-A4DA8A575967",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:xmlsoft:libxslt:1.1.14:*:*:*:*:*:*:*",
"matchCriteriaId": "4597D362-AD62-4D58-BC7F-CCED44488466",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:xmlsoft:libxslt:1.1.15:*:*:*:*:*:*:*",
"matchCriteriaId": "0D885D06-D6E5-432C-9923-AE2CE73F7654",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:xmlsoft:libxslt:1.1.16:*:*:*:*:*:*:*",
"matchCriteriaId": "6F5003EF-82E2-49F9-9F74-CB92FE98E2E3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:xmlsoft:libxslt:1.1.17:*:*:*:*:*:*:*",
"matchCriteriaId": "5C0D6095-2A7B-4328-ADA0-283E8F79AFDD",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:xmlsoft:libxslt:1.1.18:*:*:*:*:*:*:*",
"matchCriteriaId": "91C70E5E-A987-4BF3-9300-E4A3F2B0B853",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:xmlsoft:libxslt:1.1.19:*:*:*:*:*:*:*",
"matchCriteriaId": "C5EFA6E9-593B-484A-A8FB-A22BAEE208B9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:xmlsoft:libxslt:1.1.20:*:*:*:*:*:*:*",
"matchCriteriaId": "6C55B5B1-76F1-480B-B7F9-EF4AFE79E3F4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:xmlsoft:libxslt:1.1.21:*:*:*:*:*:*:*",
"matchCriteriaId": "58E904DA-889E-44B9-9AF6-EC753FB316BC",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:xmlsoft:libxslt:1.1.22:*:*:*:*:*:*:*",
"matchCriteriaId": "A3BC6F57-1DDD-4EA6-83F9-2672B11DF7B2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:xmlsoft:libxslt:1.1.23:*:*:*:*:*:*:*",
"matchCriteriaId": "69A51C1E-21C9-4FA4-8340-345B5E1F1B70",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "xslt.c in libxslt before 1.1.25 allows context-dependent attackers to cause a denial of service (crash) via a stylesheet that embeds a DTD, which causes a structure to be accessed as a different type. NOTE: this issue is due to an incomplete fix for CVE-2012-2825."
},
{
"lang": "es",
"value": "xslt.c en libxslt anterior a 1.1.25 permite a atacantes dependientes del contexto provocar una denegaci\u00f3n de servicio (ca\u00edda) a trav\u00e9s de una hoja de estilo embebida en una DTD, lo que hace que una estructura sea accesible como un tipo diferente. NOTA: este problema se debe a una soluci\u00f3n incompleta de CVE-2012-2825."
}
],
"id": "CVE-2013-4520",
"lastModified": "2026-04-29T01:13:23.040",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 4.3,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2013-12-14T20:55:03.407",
"references": [
{
"source": "secalert@redhat.com",
"tags": [
"Patch"
],
"url": "http://seclists.org/oss-sec/2013/q4/238"
},
{
"source": "secalert@redhat.com",
"tags": [
"Patch"
],
"url": "http://seclists.org/oss-sec/2013/q4/239"
},
{
"source": "secalert@redhat.com",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/56072"
},
{
"source": "secalert@redhat.com",
"url": "http://www.osvdb.org/99671"
},
{
"source": "secalert@redhat.com",
"tags": [
"Exploit",
"Patch"
],
"url": "https://bugzilla.novell.com/show_bug.cgi?id=849019"
},
{
"source": "secalert@redhat.com",
"tags": [
"Exploit",
"Patch"
],
"url": "https://gitorious.org/libxslt/libxslt/commit/7089a62b8f133b42a2981cf1f920a8b3fe9a8caa"
},
{
"source": "secalert@redhat.com",
"url": "https://www.suse.com/support/update/announcement/2013/suse-su-20131654-1.html"
},
{
"source": "secalert@redhat.com",
"url": "https://www.suse.com/support/update/announcement/2013/suse-su-20131656-1.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "http://seclists.org/oss-sec/2013/q4/238"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "http://seclists.org/oss-sec/2013/q4/239"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/56072"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.osvdb.org/99671"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit",
"Patch"
],
"url": "https://bugzilla.novell.com/show_bug.cgi?id=849019"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit",
"Patch"
],
"url": "https://gitorious.org/libxslt/libxslt/commit/7089a62b8f133b42a2981cf1f920a8b3fe9a8caa"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.suse.com/support/update/announcement/2013/suse-su-20131654-1.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.suse.com/support/update/announcement/2013/suse-su-20131656-1.html"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-Other"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2025-11-21T12:36:55+00:00",
"cve": "CVE-2013-4520",
"id": "CVE-2013-4520",
"initial_release_date": "2013-01-01T00:00:00+00:00",
"product_status:known_affected": "1",
"product_status:known_not_affected": "5",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "libxslt: DoS when reading unexpected DTD nodes in XSLT in versions prior to 1.1.25",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2013/cve-2013-4520.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2025-10-08T00:40:45Z",
"cve": "CVE-2013-4520",
"id": "CVE-2013-4520",
"initial_release_date": "2023-02-15T05:35:46Z",
"product_status:recommended": "11",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2013-4520",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2013-4520.json",
"version": "6"
}
}
}
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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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