CVE-2023-22742

一、漏洞信息
 漏洞编号：[CVE-2023-22742](https://nvd.nist.gov/vuln/detail/CVE-2023-22742)
 漏洞归属组件：[libgit2](https://gitee.com/src-openeuler/libgit2)
 漏洞归属的版本：0.27.8,1.3.2
 CVSS V3.0分值：
  BaseScore：5.9 Medium
  Vector：CVSS：3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
 漏洞简述：
  libgit2 is a cross-platform, linkable library implementation of Git. When using an SSH remote with the optional libssh2 backend, libgit2 does not perform certificate checking by default. Prior versions of libgit2 require the caller to set the `certificate_check` field of libgit2 s `git_remote_callbacks` structure - if a certificate check callback is not set, libgit2 does not perform any certificate checking. This means that by default - without configuring a certificate check callback, clients will not perform validation on the server SSH keys and may be subject to a man-in-the-middle attack. Users are encouraged to upgrade to v1.4.5 or v1.5.1. Users unable to upgrade should ensure that all relevant certificates are manually checked.
 漏洞公开时间：2023-01-20 23:15:10
 漏洞创建时间：2023-01-22 03:46:46
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2023-22742
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
| security-advisories.github.com | https://github.com/libgit2/libgit2/commit/42e5db98b963ae503229c63e44e06e439df50e56 |  |
| security-advisories.github.com | https://github.com/libgit2/libgit2/commit/cd6f679af401eda1f172402006ef8265f8bd58ea |  |
| security-advisories.github.com | https://github.com/libgit2/libgit2/releases/tag/v1.4.5 |  |
| security-advisories.github.com | https://github.com/libgit2/libgit2/releases/tag/v1.5.1 |  |
| security-advisories.github.com | https://github.com/libgit2/libgit2/security/advisories/GHSA-8643-3wh5-rmjq |  |
| security-advisories.github.com | https://www.libssh2.org |  |
| suse_bugzilla | https://github.com/libgit2/libgit2/security/advisories/GHSA-8643-3wh5-rmjq | https://bugzilla.suse.com/show_bug.cgi?id=1207364 |
| suse_bugzilla | https://github.com/libgit2/libgit2/releases/tag/v1.5.1 | https://bugzilla.suse.com/show_bug.cgi?id=1207364 |
| suse_bugzilla | https://github.com/libgit2/libgit2/releases/tag/v1.4.5 | https://bugzilla.suse.com/show_bug.cgi?id=1207364 |
| redhat_bugzilla | https://github.com/libgit2/libgit2/commit/42e5db98b963ae503229c63e44e06e439df50e56 | https://bugzilla.redhat.com/show_bug.cgi?id=2163614 |
| redhat_bugzilla | https://github.com/libgit2/libgit2/releases/tag/v1.5.1 | https://bugzilla.redhat.com/show_bug.cgi?id=2163614 |
| redhat_bugzilla | https://github.com/libgit2/libgit2/security/advisories/GHSA-8643-3wh5-rmjq | https://bugzilla.redhat.com/show_bug.cgi?id=2163614 |
| redhat_bugzilla | https://github.com/libgit2/libgit2/commit/cd6f679af401eda1f172402006ef8265f8bd58ea | https://bugzilla.redhat.com/show_bug.cgi?id=2163614 |
| redhat_bugzilla | https://github.com/libgit2/libgit2/releases/tag/v1.4.5 | https://bugzilla.redhat.com/show_bug.cgi?id=2163614 |
| redhat_bugzilla | https://www.libssh2.org | https://bugzilla.redhat.com/show_bug.cgi?id=2163614 |
| ubuntu | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-22742 | https://ubuntu.com/security/CVE-2023-22742 |
| ubuntu | https://github.com/libgit2/libgit2/commit/cd6f679af401eda1f172402006ef8265f8bd58ea (v1.4.5) | https://ubuntu.com/security/CVE-2023-22742 |
| ubuntu | https://github.com/libgit2/libgit2/commit/42e5db98b963ae503229c63e44e06e439df50e56 (v1.5.1) | https://ubuntu.com/security/CVE-2023-22742 |
| ubuntu | https://github.com/libgit2/libgit2/security/advisories/GHSA-8643-3wh5-rmjq | https://ubuntu.com/security/CVE-2023-22742 |
| ubuntu | https://github.com/libgit2/libgit2/commit/42e5db98b963ae503229c63e44e06e439df50e56 | https://ubuntu.com/security/CVE-2023-22742 |
| ubuntu | https://github.com/libgit2/libgit2/releases/tag/v1.5.1 | https://ubuntu.com/security/CVE-2023-22742 |
| ubuntu | https://github.com/libgit2/libgit2/commit/cd6f679af401eda1f172402006ef8265f8bd58ea | https://ubuntu.com/security/CVE-2023-22742 |
| ubuntu | https://github.com/libgit2/libgit2/releases/tag/v1.4.5 | https://ubuntu.com/security/CVE-2023-22742 |
| ubuntu | https://www.libssh2.org | https://ubuntu.com/security/CVE-2023-22742 |
| ubuntu | https://nvd.nist.gov/vuln/detail/CVE-2023-22742 | https://ubuntu.com/security/CVE-2023-22742 |
| ubuntu | https://launchpad.net/bugs/cve/CVE-2023-22742 | https://ubuntu.com/security/CVE-2023-22742 |
| ubuntu | https://security-tracker.debian.org/tracker/CVE-2023-22742 | https://ubuntu.com/security/CVE-2023-22742 |
| ubuntu | http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1029368 | https://ubuntu.com/security/CVE-2023-22742 |
| debian |  | https://security-tracker.debian.org/tracker/CVE-2023-22742 |
| anolis |  | https://anas.openanolis.cn/cves/detail/CVE-2023-22742 |
| cve_search |  | https://github.com/libgit2/libgit2/commit/42e5db98b963ae503229c63e44e06e439df50e56 |
| cve_search |  | https://github.com/libgit2/libgit2/releases/tag/v1.5.1 |
| cve_search |  | https://github.com/libgit2/libgit2/security/advisories/GHSA-8643-3wh5-rmjq |
| cve_search |  | https://github.com/libgit2/libgit2/commit/cd6f679af401eda1f172402006ef8265f8bd58ea |
| cve_search |  | https://github.com/libgit2/libgit2/releases/tag/v1.4.5 |
| cve_search |  | https://www.libssh2.org |
| osv | https://www.debian.org/lts/security/2023/dla-3340 | https://osv.dev/vulnerability/DLA-3340-1 |
| nvd | https://github.com/libgit2/libgit2/commit/42e5db98b963ae503229c63e44e06e439df50e56 |  |
| nvd | https://github.com/libgit2/libgit2/releases/tag/v1.5.1 |  |
| nvd | https://github.com/libgit2/libgit2/security/advisories/GHSA-8643-3wh5-rmjq |  |
| nvd | https://github.com/libgit2/libgit2/commit/cd6f679af401eda1f172402006ef8265f8bd58ea |  |
| nvd | https://github.com/libgit2/libgit2/releases/tag/v1.4.5 |  |
| nvd | https://www.libssh2.org |  |
| redhat | https://access.redhat.com/security/cve/CVE-2023-22742 |  |
| nvd | https://github.com/libgit2/libgit2/commit/42e5db98b963ae503229c63e44e06e439df50e56 |  |
| nvd | https://github.com/libgit2/libgit2/releases/tag/v1.5.1 |  |
| nvd | https://github.com/libgit2/libgit2/security/advisories/GHSA-8643-3wh5-rmjq |  |
| nvd | https://github.com/libgit2/libgit2/commit/cd6f679af401eda1f172402006ef8265f8bd58ea |  |
| nvd | https://github.com/libgit2/libgit2/releases/tag/v1.4.5 |  |
| nvd | https://www.libssh2.org |  |
| amazon_linux | https://alas.aws.amazon.com/cve/html/CVE-2022-2257.html | https://alas.aws.amazon.com/ALAS-2022-1639.html |
| amazon_linux | https://alas.aws.amazon.com/cve/html/CVE-2022-2264.html | https://alas.aws.amazon.com/ALAS-2022-1639.html |
| amazon_linux | https://alas.aws.amazon.com/cve/html/CVE-2022-2284.html | https://alas.aws.amazon.com/ALAS-2022-1639.html |
| amazon_linux | https://alas.aws.amazon.com/cve/html/CVE-2022-2285.html | https://alas.aws.amazon.com/ALAS-2022-1639.html |
| amazon_linux | https://alas.aws.amazon.com/cve/html/CVE-2022-2286.html | https://alas.aws.amazon.com/ALAS-2022-1639.html |
| amazon_linux | https://alas.aws.amazon.com/cve/html/CVE-2022-2287.html | https://alas.aws.amazon.com/ALAS-2022-1639.html |
| amazon_linux | https://alas.aws.amazon.com/cve/html/CVE-2022-2288.html | https://alas.aws.amazon.com/ALAS-2022-1639.html |
| amazon_linux | https://alas.aws.amazon.com/cve/html/CVE-2022-2289.html | https://alas.aws.amazon.com/ALAS-2022-1639.html |
| amazon_linux | https://alas.aws.amazon.com/cve/html/CVE-2022-2304.html | https://alas.aws.amazon.com/ALAS-2022-1639.html |
| amazon_linux | https://alas.aws.amazon.com/cve/html/CVE-2022-2343.html | https://alas.aws.amazon.com/ALAS-2022-1639.html |
| amazon_linux | https://alas.aws.amazon.com/cve/html/CVE-2022-2344.html | https://alas.aws.amazon.com/ALAS-2022-1639.html |
| amazon_linux | https://alas.aws.amazon.com/cve/html/CVE-2022-2345.html | https://alas.aws.amazon.com/ALAS-2022-1639.html |
| amazon_linux | https://alas.aws.amazon.com/cve/html/CVE-2022-2816.html | https://alas.aws.amazon.com/ALAS-2022-1639.html |
| amazon_linux | https://alas.aws.amazon.com/cve/html/CVE-2022-2817.html | https://alas.aws.amazon.com/ALAS-2022-1639.html |
| amazon_linux | https://alas.aws.amazon.com/cve/html/CVE-2022-2819.html | https://alas.aws.amazon.com/ALAS-2022-1639.html |
| amazon_linux | https://alas.aws.amazon.com/cve/html/CVE-2022-3037.html | https://alas.aws.amazon.com/ALAS-2022-1639.html |

</details>

漏洞分析指导链接：
  https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
 漏洞数据来源:
  openBrain开源漏洞感知系统
 漏洞补丁信息：
  <details>
<summary>详情(点击展开)</summary>

| 影响的包 | 修复版本 | 修复补丁 | 问题引入补丁 | 来源  |
| ------- | -------- | ------- | -------- | --------- |
|  |  | https://github.com/libgit2/libgit2/commit/42e5db98b963ae503229c63e44e06e439df50e56 |  | security-advisories.github.com |
|  |  | https://github.com/libgit2/libgit2/commit/cd6f679af401eda1f172402006ef8265f8bd58ea |  | security-advisories.github.com |
|  |  | https://github.com/libgit2/libgit2/commit/42e5db98b963ae503229c63e44e06e439df50e56 |  | redhat_bugzilla |
|  |  | https://github.com/libgit2/libgit2/commit/cd6f679af401eda1f172402006ef8265f8bd58ea |  | redhat_bugzilla |
|  |  | https://github.com/libgit2/libgit2/commit/cd6f679af401eda1f172402006ef8265f8bd58ea (v1.4.5) |  | ubuntu |
|  |  | https://github.com/libgit2/libgit2/commit/42e5db98b963ae503229c63e44e06e439df50e56 (v1.5.1) |  | ubuntu |
|  |  | https://github.com/libgit2/libgit2/commit/42e5db98b963ae503229c63e44e06e439df50e56 |  | ubuntu |
|  |  | https://github.com/libgit2/libgit2/commit/cd6f679af401eda1f172402006ef8265f8bd58ea |  | ubuntu |
|  |  | https://github.com/libgit2/libgit2/commit/42e5db98b963ae503229c63e44e06e439df50e56 |  | nvd |
|  |  | https://github.com/libgit2/libgit2/commit/cd6f679af401eda1f172402006ef8265f8bd58ea |  | nvd |

</details>

二、漏洞分析结构反馈
 影响性分析说明：
    libgit2 is a cross-platform, linkable library implementation of Git. When using an SSH remote with the optional libssh2 backend, libgit2 does not perform certificate checking by default. Prior versions of libgit2 require the caller to set the certificate_check field of libgit2 s git_remote_callbacks structure - if a certificate check callback is not set, libgit2 does not perform any certificate checking. This means that by default - without configuring a certificate check callback, clients will not perform validation on the server SSH keys and may be subject to a man-in-the-middle attack. Users are encouraged to upgrade to v1.4.5 or v1.5.1. Users unable to upgrade should ensure that all relevant certificates are manually checked. 
 openEuler评分：
  5.9
 Vector：CVSS：3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
 受影响版本排查(受影响/不受影响)：
  1.openEuler-20.03-LTS-SP1(0.27.8):受影响
2.openEuler-20.03-LTS-SP3(0.27.8):受影响
3.openEuler-20.03-LTS-SP4:受影响
4.openEuler-22.03-LTS(0.27.8):受影响
5.openEuler-22.03-LTS-SP1(1.3.2):受影响
6.openEuler-22.03-LTS-SP2(1.3.2):受影响
7.openEuler-22.03-LTS-SP3:受影响

修复是否涉及abi变化(是/否)：
  1.openEuler-20.03-LTS-SP1(0.27.8):否
2.openEuler-20.03-LTS-SP3(0.27.8):否
3.openEuler-20.03-LTS-SP4:否
4.openEuler-22.03-LTS(0.27.8):否
5.openEuler-22.03-LTS-SP1(1.3.2):否
6.openEuler-22.03-LTS-SP2(1.3.2):否
7.openEuler-22.03-LTS-SP3:否

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2023-1957

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