CVE-2019-15903 (GCVE-0-2019-15903)

Vulnerability from cvelistv5 – Published: 2019-09-04 05:59 – Updated: 2025-05-30 19:27
VLAI
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)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-30 19:27 UTC
CWE
Assigner
References
URL Tags
https://usn.ubuntu.com/4132-1/ vendor-advisoryx_refsource_UBUNTU
https://seclists.org/bugtraq/2019/Sep/30 mailing-listx_refsource_BUGTRAQ
https://usn.ubuntu.com/4132-2/ vendor-advisoryx_refsource_UBUNTU
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://www.debian.org/security/2019/dsa-4530 vendor-advisoryx_refsource_DEBIAN
https://seclists.org/bugtraq/2019/Sep/37 mailing-listx_refsource_BUGTRAQ
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://seclists.org/bugtraq/2019/Oct/29 mailing-listx_refsource_BUGTRAQ
https://usn.ubuntu.com/4165-1/ vendor-advisoryx_refsource_UBUNTU
https://www.debian.org/security/2019/dsa-4549 vendor-advisoryx_refsource_DEBIAN
https://access.redhat.com/errata/RHSA-2019:3210 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:3237 vendor-advisoryx_refsource_REDHAT
https://seclists.org/bugtraq/2019/Nov/1 mailing-listx_refsource_BUGTRAQ
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://access.redhat.com/errata/RHSA-2019:3756 vendor-advisoryx_refsource_REDHAT
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
https://seclists.org/bugtraq/2019/Nov/24 mailing-listx_refsource_BUGTRAQ
https://www.debian.org/security/2019/dsa-4571 vendor-advisoryx_refsource_DEBIAN
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
https://security.gentoo.org/glsa/201911-08 vendor-advisoryx_refsource_GENTOO
https://usn.ubuntu.com/4202-1/ vendor-advisoryx_refsource_UBUNTU
https://seclists.org/bugtraq/2019/Dec/17 mailing-listx_refsource_BUGTRAQ
https://seclists.org/bugtraq/2019/Dec/21 mailing-listx_refsource_BUGTRAQ
https://seclists.org/bugtraq/2019/Dec/23 mailing-listx_refsource_BUGTRAQ
http://seclists.org/fulldisclosure/2019/Dec/23 mailing-listx_refsource_FULLDISC
http://seclists.org/fulldisclosure/2019/Dec/26 mailing-listx_refsource_FULLDISC
http://seclists.org/fulldisclosure/2019/Dec/30 mailing-listx_refsource_FULLDISC
http://seclists.org/fulldisclosure/2019/Dec/27 mailing-listx_refsource_FULLDISC
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://usn.ubuntu.com/4335-1/ vendor-advisoryx_refsource_UBUNTU
https://www.oracle.com/security-alerts/cpuapr2020.html x_refsource_MISC
https://www.oracle.com/security-alerts/cpuoct2020.html x_refsource_MISC
https://github.com/libexpat/libexpat/issues/317 x_refsource_MISC
https://github.com/libexpat/libexpat/pull/318 x_refsource_MISC
https://github.com/libexpat/libexpat/commit/c20b7… x_refsource_MISC
https://github.com/libexpat/libexpat/issues/342 x_refsource_CONFIRM
http://packetstormsecurity.com/files/154503/Slack… x_refsource_MISC
https://security.netapp.com/advisory/ntap-2019092… x_refsource_CONFIRM
http://packetstormsecurity.com/files/154927/Slack… x_refsource_MISC
http://packetstormsecurity.com/files/154947/Slack… x_refsource_MISC
https://support.apple.com/kb/HT210788 x_refsource_CONFIRM
https://support.apple.com/kb/HT210790 x_refsource_CONFIRM
https://support.apple.com/kb/HT210785 x_refsource_CONFIRM
https://support.apple.com/kb/HT210789 x_refsource_CONFIRM
https://support.apple.com/kb/HT210793 x_refsource_CONFIRM
https://support.apple.com/kb/HT210795 x_refsource_CONFIRM
https://support.apple.com/kb/HT210794 x_refsource_CONFIRM
https://www.tenable.com/security/tns-2021-11 x_refsource_CONFIRM
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  "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"
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      "date": "2026-08-28",
      "epss": "0.06643",
      "percentile": "0.93472"
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      "current_release_date": "2021-12-01T00:00:00.000Z",
      "cve": "CVE-2019-15903",
      "id": "msrc_CVE-2019-15903",
      "initial_release_date": "2019-09-02T00:00:00.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "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.",
      "url": "https://msrc.microsoft.com/csaf/vex/2019/msrc_cve-2019-15903.json",
      "version": "1"
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T07:26:22+00:00",
      "cve": "CVE-2019-15903",
      "id": "CVE-2019-15903",
      "initial_release_date": "2019-09-04T00:00:00+00:00",
      "product_status:fixed": "267",
      "product_status:known_affected": "24",
      "product_status:known_not_affected": "38",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "expat: heap-based buffer over-read via crafted XML input",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-15903.json",
      "version": "3"
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\"MISC\"}, {\"url\": \"https://security.netapp.com/advisory/ntap-20190926-0004/\", \"name\": \"https://security.netapp.com/advisory/ntap-20190926-0004/\", \"refsource\": \"CONFIRM\"}, {\"url\": \"http://packetstormsecurity.com/files/154927/Slackware-Security-Advisory-python-Updates.html\", \"name\": \"http://packetstormsecurity.com/files/154927/Slackware-Security-Advisory-python-Updates.html\", \"refsource\": \"MISC\"}, {\"url\": \"http://packetstormsecurity.com/files/154947/Slackware-Security-Advisory-mozilla-firefox-Updates.html\", \"name\": \"http://packetstormsecurity.com/files/154947/Slackware-Security-Advisory-mozilla-firefox-Updates.html\", \"refsource\": \"MISC\"}, {\"url\": \"https://support.apple.com/kb/HT210788\", \"name\": \"https://support.apple.com/kb/HT210788\", \"refsource\": \"CONFIRM\"}, {\"url\": \"https://support.apple.com/kb/HT210790\", \"name\": \"https://support.apple.com/kb/HT210790\", \"refsource\": \"CONFIRM\"}, {\"url\": \"https://support.apple.com/kb/HT210785\", \"name\": \"https://support.apple.com/kb/HT210785\", \"refsource\": \"CONFIRM\"}, {\"url\": \"https://support.apple.com/kb/HT210789\", \"name\": \"https://support.apple.com/kb/HT210789\", \"refsource\": \"CONFIRM\"}, {\"url\": \"https://support.apple.com/kb/HT210793\", \"name\": \"https://support.apple.com/kb/HT210793\", \"refsource\": \"CONFIRM\"}, {\"url\": \"https://support.apple.com/kb/HT210795\", \"name\": \"https://support.apple.com/kb/HT210795\", \"refsource\": \"CONFIRM\"}, {\"url\": \"https://support.apple.com/kb/HT210794\", \"name\": \"https://support.apple.com/kb/HT210794\", \"refsource\": \"CONFIRM\"}, {\"url\": \"https://www.tenable.com/security/tns-2021-11\", \"name\": \"https://www.tenable.com/security/tns-2021-11\", \"refsource\": \"CONFIRM\"}]}, \"data_format\": \"MITRE\", \"description\": {\"description_data\": [{\"lang\": \"eng\", \"value\": \"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.\"}]}, \"problemtype\": {\"problemtype_data\": [{\"description\": [{\"lang\": \"eng\", \"value\": \"n/a\"}]}]}, \"data_version\": \"4.0\", \"CVE_data_meta\": {\"ID\": \"CVE-2019-15903\", \"STATE\": \"PUBLIC\", \"ASSIGNER\": \"cve@mitre.org\"}}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2019-15903\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-30T19:27:19.904Z\", \"dateReserved\": \"2019-09-04T00:00:00.000Z\", \"assignerOrgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"datePublished\": \"2019-09-04T05:59:16.000Z\", \"assignerShortName\": \"mitre\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.