Security readout for executives and security teams
CVE-2019-15903 is a memory safety flaw in libexpat before 2.2.8. A crafted XML file can trigger a heap buffer over-read when line or column information is requested, potentially crashing software that parses the file. The main business risk is denial of service in applications or services that process untrusted XML. Exposure is most likely where applications, OS packages, or bundled runtimes use libexpat before 2.2.8 to parse untrusted XML. The provided affected-product metadata is incomplete, so teams should inventory both system libexpat packages and software that vendors its own copy. Treat this as a moderate patching item. It is not evidenced as actively exploited in the provided sources, but XML parsers are common dependencies and the impact can be service disruption. Prioritize systems that automatically process untrusted XML. Mitigation focus: Upgrade libexpat to 2.2.8 or a vendor-patched package.; Apply relevant distribution advisories for Ubuntu, Debian, Fedora, openSUSE, Slackware, or Red Hat.; Check applications that bundle libexpat rather than relying only on OS package status..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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Open ATT&CK lookupCVE-2019-15903 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- USN-4132-1CVE reference · vendor-advisory, x_refsource_UBUNTU
- 20190917 [slackware-security] expat (SSA:2019-259-01)CVE reference · mailing-list, x_refsource_BUGTRAQ
- USN-4132-2CVE reference · vendor-advisory, x_refsource_UBUNTU
- FEDORA-2019-613edfe68bCVE reference · vendor-advisory, x_refsource_FEDORA
- DSA-4530CVE reference · vendor-advisory, x_refsource_DEBIAN
- 20190923 [SECURITY] [DSA 4530-1] expat security updateCVE reference · mailing-list, x_refsource_BUGTRAQ
- FEDORA-2019-9505c6b555CVE reference · vendor-advisory, x_refsource_FEDORA
- FEDORA-2019-672ae0f060CVE reference · vendor-advisory, x_refsource_FEDORA
- 20191021 [slackware-security] python (SSA:2019-293-01)CVE reference · mailing-list, x_refsource_BUGTRAQ
- USN-4165-1CVE reference · vendor-advisory, x_refsource_UBUNTU
- DSA-4549CVE reference · vendor-advisory, x_refsource_DEBIAN
- RHSA-2019:3210CVE reference · vendor-advisory, x_refsource_REDHAT
- RHSA-2019:3237CVE reference · vendor-advisory, x_refsource_REDHAT
- 20191101 [SECURITY] [DSA 4549-1] firefox-esr security updateCVE reference · mailing-list, x_refsource_BUGTRAQ
- RHSA-2019:3756CVE reference · vendor-advisory, x_refsource_REDHAT
- [debian-lts-announce] 20191110 [SECURITY] [DLA 1987-1] firefox-esr security updateCVE reference · mailing-list, x_refsource_MLIST
- 20191118 [SECURITY] [DSA 4571-1] thunderbird security updateCVE reference · mailing-list, x_refsource_BUGTRAQ
- DSA-4571CVE reference · vendor-advisory, x_refsource_DEBIAN
- [debian-lts-announce] 20191118 [SECURITY] [DLA 1997-1] thunderbird security updateCVE reference · mailing-list, x_refsource_MLIST
- GLSA-201911-08CVE reference · vendor-advisory, x_refsource_GENTOO
- USN-4202-1CVE reference · vendor-advisory, x_refsource_UBUNTU
- 20191211 APPLE-SA-2019-12-10-8 watchOS 6.1.1CVE reference · mailing-list, x_refsource_BUGTRAQ
- 20191211 APPLE-SA-2019-12-10-5 tvOS 13.3CVE reference · mailing-list, x_refsource_BUGTRAQ
Products and packages named in the record
CWE details
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Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.