Test ID:	1.3.6.1.4.1.25623.1.1.2.2023.1304
Category:	Huawei EulerOS Local Security Checks
Title:	Huawei EulerOS: Security Advisory for yajl (EulerOS-SA-2023-1304)
Summary:	The remote host is missing an update for the Huawei EulerOS 'yajl' package(s) announced via the EulerOS-SA-2023-1304 advisory.
Description:	Summary: The remote host is missing an update for the Huawei EulerOS 'yajl' package(s) announced via the EulerOS-SA-2023-1304 advisory. Vulnerability Insight: yajl-ruby is a C binding to the YAJL JSON parsing and generation library. The 1.x branch and the 2.x branch of `yajl` contain an integer overflow which leads to subsequent heap memory corruption when dealing with large (~ 2GB) inputs. The reallocation logic at `yajl_buf.c#L64` may result in the `need` 32bit integer wrapping to 0 when `need` approaches a value of 0x80000000 (i.e. ~ 2GB of data), which results in a reallocation of buf->alloc into a small heap chunk. These integers are declared as `size_t` in the 2.x branch of `yajl`, which practically prevents the issue from triggering on 64bit platforms, however this does not preclude this issue triggering on 32bit builds on which `size_t` is a 32bit integer. Subsequent population of this under-allocated heap chunk is based on the original buffer size, leading to heap memory corruption. This vulnerability mostly impacts process availability. Maintainers believe exploitation for arbitrary code execution is unlikely. A patch is available and anticipated to be part of yajl-ruby version 1.4.2. As a workaround, avoid passing large inputs to YAJL.(CVE-2022-24795) Affected Software/OS: 'yajl' package(s) on Huawei EulerOS Virtualization 3.0.2.2. Solution: Please install the updated package(s). CVSS Score: 5.0 CVSS Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2022-24795 https://github.com/brianmario/yajl-ruby/security/advisories/GHSA-jj47-x69x-mxrm https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KLE3C4CECEJ4EUYI56KXI6OWACWXX7WN/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YO32YDJ74DADC7CMJNLSLBVWN5EXGF5J/ https://github.com/brianmario/yajl-ruby/blob/7168bd79b888900aa94523301126f968a93eb3a6/ext/yajl/yajl_buf.c#L64 https://github.com/brianmario/yajl-ruby/commit/7168bd79b888900aa94523301126f968a93eb3a6 https://lists.debian.org/debian-lts-announce/2023/07/msg00013.html https://lists.debian.org/debian-lts-announce/2023/08/msg00003.html
Copyright	Copyright (C) 2023 Greenbone AG

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