Alibaba Cloud Linux 2.1903 Security Advisory: ALINUX2-SA-2022:0017

Issued: 2022-03-30
Updated: 2022-03-30

expat security update

Package updates are available for Alibaba Cloud Linux 2.1903 that fix the following vulnerabilities:

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-2021-46143:
In doProlog in xmlparse.c in Expat (aka libexpat) before 2.4.3, an integer overflow exists for m_groupSize.

CVE-2022-22822:
addBinding in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.

CVE-2022-22823:
build_model in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.

CVE-2022-22824:
defineAttribute in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.

CVE-2022-22825:
lookup in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.

CVE-2022-22826:
nextScaffoldPart in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.

CVE-2022-22827:
storeAtts in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.

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:
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:
xmlparse.c in Expat (aka libexpat) before 2.4.5 allows attackers to insert namespace-separator characters into namespace URIs.

CVE-2022-25315:
In Expat (aka libexpat) before 2.4.5, there is an integer overflow in storeRawNames.