Comment 0 for bug 1969362

This LP tracks the following expat related CVEs:

CVE-2021-45960: https://nvd.nist.gov/vuln/detail/CVE-2021-45960
In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) places in the storeAtts function in xmlparse.c can lead to realloc misbehavior (e.g., allocating too few bytes, or only freeing memory).

CVE-2022-22822: https://nvd.nist.gov/vuln/detail/CVE-2022-22822
addBinding in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.

CVE-2022-22823: https://nvd.nist.gov/vuln/detail/CVE-2022-22823
build_model in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.

CVE-2022-22824: https://nvd.nist.gov/vuln/detail/CVE-2022-22824
defineAttribute in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.

CVE-2022-23852: https://nvd.nist.gov/vuln/detail/CVE-2022-23852
Expat (aka libexpat) before 2.4.4 has a signed integer overflow in XML_GetBuffer, for configurations with a nonzero XML_CONTEXT_BYTES.

CVE-2022-25235: https://nvd.nist.gov/vuln/detail/CVE-2022-25235
xmltok_impl.c in Expat (aka libexpat) before 2.4.5 lacks certain validation of encoding, such as checks for whether a UTF-8 character is valid in a certain context.

CVE-2022-25236: https://nvd.nist.gov/vuln/detail/CVE-2022-25236
xmlparse.c in Expat (aka libexpat) before 2.4.5 allows attackers to insert namespace-separator characters into namespace URIs.

CVE-2022-25315: https://nvd.nist.gov/vuln/detail/CVE-2022-25315
In Expat (aka libexpat) before 2.4.5, there is an integer overflow in storeRawNames.

Score:
cve_id status cvss2Score av ac au ai
CVE-2021-45960 fixed 9 N L S C
CVE-2022-22822 fixed 7.5 N L N P
CVE-2022-22823 fixed 7.5 N L N P
CVE-2022-22824 fixed 7.5 N L N P
CVE-2022-23852 fixed 7.5 N L N P
CVE-2022-25235 fixed 7.5 N L N P
CVE-2022-25236 fixed 7.5 N L N P
CVE-2022-25315 fixed 7.5 N L N P

References:
https://access.redhat.com/security/cve/cve-2021-45960
https://bugzilla.redhat.com/show_bug.cgi?id=2044451
https://access.redhat.com/errata/RHSA-2022:1069
https://lists.centos.org/pipermail/centos-announce/2022-March/073580.html