CVE-2021-46848

一、漏洞信息
 漏洞编号：[CVE-2021-46848](https://nvd.nist.gov/vuln/detail/CVE-2021-46848)
 漏洞归属组件：[libtasn1](https://gitee.com/src-openeuler/libtasn1)
 漏洞归属的版本：4.16.0,4.17.0
 CVSS V3.0分值：
  BaseScore：9.1 Critical
  Vector：CVSS：3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
 漏洞简述：
  GNU Libtasn1 before 4.19.0 has an ETYPE_OK off-by-one array size check that affects asn1_encode_simple_der.
 漏洞公开时间：2022-10-24 22:15:00
 漏洞创建时间：2022-10-25 03:59:04
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2021-46848
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
| nvd | https://gitlab.com/gnutls/libtasn1/-/issues/32 |  |
| nvd | https://bugs.gentoo.org/866237 |  |
| nvd | https://gitlab.com/gnutls/libtasn1/-/commit/44a700d2051a666235748970c2df047ff207aeb5 |  |
| nvd | https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AV4SHDJF2XLB4CUPTBPQQ6CLGZ5LKXPZ/ |  |
| nvd | https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OGO7XST4EIJGX4B2ITZCYSWM24534BSU/ |  |
| nvd | https://security.netapp.com/advisory/ntap-20221118-0006/ |  |
| nvd | https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V5LWOGF7QRMNFRUCZY6TDYQJVFI6MOQ2/ |  |
| nvd | https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ECM2ELTVRYV4BZ5L5GMIRQE27RFHPAQ6/ |  |
| nvd | https://lists.debian.org/debian-lts-announce/2023/01/msg00003.html |  |
| redhat | https://access.redhat.com/security/cve/CVE-2021-46848 |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-46848 | https://bugzilla.suse.com/show_bug.cgi?id=1204690 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2021-46848 | https://bugzilla.suse.com/show_bug.cgi?id=1204690 |
| suse_bugzilla | https://gitlab.com/gnutls/libtasn1/-/issues/32 | https://bugzilla.suse.com/show_bug.cgi?id=1204690 |
| suse_bugzilla | https://bugs.gentoo.org/866237 | https://bugzilla.suse.com/show_bug.cgi?id=1204690 |
| redhat_bugzilla | https://gitlab.com/gnutls/libtasn1/-/issues/32 | https://bugzilla.redhat.com/show_bug.cgi?id=2140058 |
| redhat_bugzilla | https://bugs.gentoo.org/866237 | https://bugzilla.redhat.com/show_bug.cgi?id=2140058 |
| redhat_bugzilla | https://gitlab.com/gnutls/libtasn1/-/commit/44a700d2051a666235748970c2df047ff207aeb5 | https://bugzilla.redhat.com/show_bug.cgi?id=2140058 |
| redhat_bugzilla | https://access.redhat.com/errata/RHSA-2023:0116 | https://bugzilla.redhat.com/show_bug.cgi?id=2140058 |
| ubuntu | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-46848 | https://ubuntu.com/security/CVE-2021-46848 |
| ubuntu | https://ubuntu.com/security/notices/USN-5707-1 | https://ubuntu.com/security/CVE-2021-46848 |
| ubuntu | https://nvd.nist.gov/vuln/detail/CVE-2021-46848 | https://ubuntu.com/security/CVE-2021-46848 |
| ubuntu | https://launchpad.net/bugs/cve/CVE-2021-46848 | https://ubuntu.com/security/CVE-2021-46848 |
| ubuntu | https://security-tracker.debian.org/tracker/CVE-2021-46848 | https://ubuntu.com/security/CVE-2021-46848 |
| ubuntu | https://gitlab.com/gnutls/libtasn1/-/issues/32 | https://ubuntu.com/security/CVE-2021-46848 |
| ubuntu | https://bugs.gentoo.org/866237 | https://ubuntu.com/security/CVE-2021-46848 |
| debian |  | https://security-tracker.debian.org/tracker/CVE-2021-46848 |
| cve_search |  | https://gitlab.com/gnutls/libtasn1/-/issues/32 |
| cve_search |  | https://bugs.gentoo.org/866237 |
| cve_search |  | https://gitlab.com/gnutls/libtasn1/-/commit/44a700d2051a666235748970c2df047ff207aeb5 |
| cve_search |  | https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AV4SHDJF2XLB4CUPTBPQQ6CLGZ5LKXPZ/ |
| cve_search |  | https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OGO7XST4EIJGX4B2ITZCYSWM24534BSU/ |
| cve_search |  | https://security.netapp.com/advisory/ntap-20221118-0006/ |
| cve_search |  | https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V5LWOGF7QRMNFRUCZY6TDYQJVFI6MOQ2/ |
| cve_search |  | https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ECM2ELTVRYV4BZ5L5GMIRQE27RFHPAQ6/ |
| cve_search |  | https://lists.debian.org/debian-lts-announce/2023/01/msg00003.html |
| mageia |  | http://advisories.mageia.org/MGASA-2022-0414.html |
| 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 |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-46848 |  |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2021-46848 |  |
| suse_bugzilla | https://gitlab.com/gnutls/libtasn1/-/issues/32 |  |
| suse_bugzilla | https://bugs.gentoo.org/866237 |  |
| debian | https://security-tracker.debian.org/tracker/CVE-2021-46848 |  |
| nvd | https://gitlab.com/gnutls/libtasn1/-/issues/32 |  |
| nvd | https://bugs.gentoo.org/866237 |  |
| nvd | https://gitlab.com/gnutls/libtasn1/-/commit/44a700d2051a666235748970c2df047ff207aeb5 |  |

</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://gitlab.com/gnutls/libtasn1/-/commit/44a700d2051a666235748970c2df047ff207aeb5 |  | nvd |
|  |  | https://gitlab.com/gnutls/libtasn1/-/commit/44a700d2051a666235748970c2df047ff207aeb5 |  | redhat_bugzilla |

</details>

二、漏洞分析结构反馈
 影响性分析说明：
        GNU Libtasn1组件在4.19.0之前的版本中存在潜在的数组越界访问漏洞。接口函数asn1_encode_simple_der调用的宏ETYPE_OK代码中数组索引检查错误，攻击者可能利用该漏洞传递非预期数据，导致程序解析数据时越界访问数组内容，造成未知错误。影响系统数据机密性及系统可用性。   
 openEuler评分：
  9.1
 Vector：CVSS：3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
 受影响版本排查(受影响/不受影响)：
  1.openEuler-20.03-LTS-SP1(4.16.0):受影响
2.openEuler-20.03-LTS-SP3(4.16.0):受影响
3.openEuler-22.03-LTS(4.17.0):受影响

修复是否涉及abi变化(是/否)：
  1.openEuler-20.03-LTS-SP1(4.16.0):否
2.openEuler-20.03-LTS-SP3(4.16.0):否
3.openEuler-22.03-LTS(4.17.0):否

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2022-2030

<table><tr><th white-space: nowrap;>参考网址</th> <th white-space: nowrap;>关联pr</th> <th white-space: nowrap;>状态</th> <th white-space: nowrap;>补丁链接</th></tr><tr><td>https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2021-46848</td><td></td><td></td><td></td></tr><tr><td rowspan="1">https://www.opencve.io/cve/CVE-2021-46848</td><td>None</td><td>None</td><td><a href=https://gitlab.com/gnutls/libtasn1/-/commit/44a700d2051a666235748970c2df047ff207aeb5>https://gitlab.com/gnutls/libtasn1/-/commit/44a700d2051a666235748970c2df047ff207aeb5</a></td></tr><tr><td rowspan="1">https://nvd.nist.gov/vuln/detail/CVE-2021-46848</td><td>None</td><td>None</td><td><a href=https://gitlab.com/gnutls/libtasn1/-/commit/44a700d2051a666235748970c2df047ff207aeb5>https://gitlab.com/gnutls/libtasn1/-/commit/44a700d2051a666235748970c2df047ff207aeb5</a></td></tr><tr><td>https://security-tracker.debian.org/tracker/CVE-2021-46848</td><td></td><td></td><td></td></tr><tr><td>https://ubuntu.com/security/CVE-2021-46848</td><td></td><td></td><td></td></tr><tr><td>http://www.cnnvd.org.cn/web/vulnerability/queryLds.tag?qcvCnnvdid=CVE-2021-46848</td><td></td><td></td><td></td></tr></table>

> 说明：补丁链接仅供初步排查参考，实际可用性请人工再次确认，补丁下载验证可使用[CVE补丁工具](https://gitee.com/openeuler/cve-manager/blob/master/cve-agency-manager/cve_tracking/README.md)。
若补丁不准确，烦请在此issue下评论 '/report-patch 参考网址 补丁链接1,补丁链接2' 反馈正确信息，便于我们不断优化工具，不胜感激。
如 /report-patch https://security-tracker.debian.org/tracker/CVE-2021-3997 https://github.com/systemd/systemd/commit/5b1cf7a9be37e20133c0208005274ce4a5b5c6a1

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