RHSA-2022:7811 - Security Advisory

Topic

An update for mingw-expat is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

Expat is a C library for parsing XML documents. The mingw-expat packages provide a port of the Expat library for MinGW.

The following packages have been upgraded to a later upstream version: mingw-expat (2.4.8). (BZ#2057023, BZ#2057037, BZ#2057127)

Security Fix(es):

• expat: Malformed 2- and 3-byte UTF-8 sequences can lead to arbitrary code execution (CVE-2022-25235)
• expat: Namespace-separator characters in "xmlns[:prefix]" attribute values can lead to arbitrary code execution (CVE-2022-25236)
• expat: Integer overflow in storeRawNames() (CVE-2022-25315)
• expat: Stack exhaustion in doctype parsing (CVE-2022-25313)
• expat: Integer overflow in copyString() (CVE-2022-25314)
• expat: Integer overflow in the doProlog function (CVE-2022-23990)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.7 Release Notes linked from the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat CodeReady Linux Builder for x86_64 8 x86_64
• Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 8.8 x86_64

Fixes

• BZ - 2048356 - CVE-2022-23990 expat: integer overflow in the doProlog function
• BZ - 2056350 - CVE-2022-25313 expat: Stack exhaustion in doctype parsing
• BZ - 2056354 - CVE-2022-25314 expat: Integer overflow in copyString()
• BZ - 2056363 - CVE-2022-25315 expat: Integer overflow in storeRawNames()
• BZ - 2056366 - CVE-2022-25235 expat: Malformed 2- and 3-byte UTF-8 sequences can lead to arbitrary code execution
• BZ - 2056370 - CVE-2022-25236 expat: Namespace-separator characters in "xmlns[:prefix]" attribute values can lead to arbitrary code execution

CVEs

• CVE-2022-23990
• CVE-2022-25235
• CVE-2022-25236
• CVE-2022-25313
• CVE-2022-25314
• CVE-2022-25315

References

• https://access.redhat.com/security/updates/classification/#important
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.7_release_notes/index