ALT-PU-2021-3530-2

Package update expat in branch sisyphus

Version2.4.1-alt1

Published2026-02-04

Max severityMEDIUM

Severity:

Closed issues (2)

MEDIUM5.6

Уязвимость библиотеки разбора XML Expat, связанная с неверным ограничением XML-ссылок на внешние объекты, позволяющая нарушителю получить доступ к конфиденциальным данным, нарушить их целостность, а также вызвать отказ в обслуживании

Published: 2023-12-26Modified: 2026-04-20

CVSS 3.xMEDIUM 5.6

CVSS:3.x/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS 2.0MEDIUM 6.8

CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:P/A:P

References

CVE-2013-0340

MEDIUM6.8

expat before version 2.4.0 does not properly handle entities expansion unless an application developer uses the XML_SetEntityDeclHandler function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because expat already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed, and each affected application would need its own CVE.

Published: 2014-01-21Modified: 2026-04-29

CVSS 2.0MEDIUM 6.8

CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:P/A:P

References