CVE-2023-4911

一、漏洞信息
 漏洞编号：[CVE-2023-4911](https://nvd.nist.gov/vuln/detail/CVE-2023-4911)
 漏洞归属组件：[glibc](https://gitee.com/src-openeuler/glibc)
 漏洞归属的版本：2.28,2.31,2.34,2.35,2.36
 CVSS V3.0分值：
  BaseScore：7.8 High
  Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
 漏洞简述：
  A buffer overflow was discovered in the GNU C Library s dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.
 漏洞公开时间：2023-10-03 18:15:10
 漏洞创建时间：2023-10-04 04:03:06
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2023-4911
<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://www.qualys.com/cve-2023-4911/ |  |
| nvd | https://bugzilla.redhat.com/show_bug.cgi?id=2238352 |  |
| nvd | https://www.qualys.com/2023/10/03/cve-2023-4911/looney-tunables-local-privilege-escalation-glibc-ld-so.txt |  |
| nvd | https://access.redhat.com/security/cve/CVE-2023-4911 |  |
| nvd | http://www.openwall.com/lists/oss-security/2023/10/03/3 |  |
| nvd | http://www.openwall.com/lists/oss-security/2023/10/03/2 |  |
| nvd | https://www.debian.org/security/2023/dsa-5514 |  |
| nvd | https://security.gentoo.org/glsa/202310-03 |  |
| nvd | https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAQWHTSVOCOZ5K6KPIWKRT3JX4RTZUR/ |  |
| nvd | https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4DBUQRRPB47TC3NJOUIBVWUGFHBJAFDL/ |  |
| nvd | https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DFG4P76UHHZEWQ26FWBXG76N2QLKKPZA/ |  |
| nvd | http://www.openwall.com/lists/oss-security/2023/10/05/1 |  |
| nvd | https://access.redhat.com/errata/RHSA-2023:5454 |  |
| nvd | https://access.redhat.com/errata/RHSA-2023:5453 |  |
| nvd | https://access.redhat.com/errata/RHSA-2023:5455 |  |
| nvd | https://access.redhat.com/errata/RHSA-2023:5476 |  |
| nvd | http://seclists.org/fulldisclosure/2023/Oct/11 |  |
| nvd | http://packetstormsecurity.com/files/174986/glibc-ld.so-Local-Privilege-Escalation.html |  |
| redhat | https://access.redhat.com/security/cve/CVE-2023-4911 |  |
| redhat_bugzilla | https://sourceware.org/git?p=glibc.git;a=commit;h=2ed18c5b534d9e92fc006202a5af0df6b72e7aca | https://bugzilla.redhat.com/show_bug.cgi?id=2238352 |
| redhat_bugzilla | https://sourceware.org/git/?p=glibc.git;a=commit;h=1056e5b4c3f2d90ed2b4a55f96add28da2f4c8fa | https://bugzilla.redhat.com/show_bug.cgi?id=2238352 |
| redhat_bugzilla | https://access.redhat.com/errata/RHSA-2023:5454 | https://bugzilla.redhat.com/show_bug.cgi?id=2238352 |
| redhat_bugzilla | https://access.redhat.com/errata/RHSA-2023:5453 | https://bugzilla.redhat.com/show_bug.cgi?id=2238352 |
| redhat_bugzilla | https://access.redhat.com/errata/RHSA-2023:5455 | https://bugzilla.redhat.com/show_bug.cgi?id=2238352 |
| redhat_bugzilla | https://access.redhat.com/errata/RHSA-2023:5476 | https://bugzilla.redhat.com/show_bug.cgi?id=2238352 |
| redhat_bugzilla | https://sourceware.org/git/?p=glibc.git;a=patch;h=1056e5b4c3f2d90ed2b4a55f96add28da2f4c8fa | https://bugzilla.redhat.com/show_bug.cgi?id=2238352 |
| ubuntu | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4911 | https://ubuntu.com/security/CVE-2023-4911 |
| ubuntu | https://www.qualys.com/2023/10/03/cve-2023-4911/looney-tunables-local-privilege-escalation-glibc-ld-so.txt | https://ubuntu.com/security/CVE-2023-4911 |
| ubuntu | https://ubuntu.com/security/notices/USN-6409-1 | https://ubuntu.com/security/CVE-2023-4911 |
| ubuntu | https://nvd.nist.gov/vuln/detail/CVE-2023-4911 | https://ubuntu.com/security/CVE-2023-4911 |
| ubuntu | https://launchpad.net/bugs/cve/CVE-2023-4911 | https://ubuntu.com/security/CVE-2023-4911 |
| ubuntu | https://security-tracker.debian.org/tracker/CVE-2023-4911 | https://ubuntu.com/security/CVE-2023-4911 |
| debian |  | https://security-tracker.debian.org/tracker/CVE-2023-4911 |
| gentoo |  | https://security.gentoo.org/glsa/202310-03 |
| anolis |  | https://anas.openanolis.cn/cves/detail/CVE-2023-4911 |
| cve_search |  | https://www.qualys.com/cve-2023-4911/ |
| cve_search |  | https://bugzilla.redhat.com/show_bug.cgi?id=2238352 |
| cve_search |  | https://www.qualys.com/2023/10/03/cve-2023-4911/looney-tunables-local-privilege-escalation-glibc-ld-so.txt |
| cve_search |  | https://access.redhat.com/security/cve/CVE-2023-4911 |
| cve_search |  | http://www.openwall.com/lists/oss-security/2023/10/03/3 |
| cve_search |  | http://www.openwall.com/lists/oss-security/2023/10/03/2 |
| cve_search |  | https://www.debian.org/security/2023/dsa-5514 |
| cve_search |  | https://security.gentoo.org/glsa/202310-03 |
| cve_search |  | https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAQWHTSVOCOZ5K6KPIWKRT3JX4RTZUR/ |
| cve_search |  | https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4DBUQRRPB47TC3NJOUIBVWUGFHBJAFDL/ |
| cve_search |  | https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DFG4P76UHHZEWQ26FWBXG76N2QLKKPZA/ |
| cve_search |  | http://www.openwall.com/lists/oss-security/2023/10/05/1 |
| cve_search |  | https://access.redhat.com/errata/RHSA-2023:5454 |
| cve_search |  | https://access.redhat.com/errata/RHSA-2023:5453 |
| cve_search |  | https://access.redhat.com/errata/RHSA-2023:5455 |
| cve_search |  | https://access.redhat.com/errata/RHSA-2023:5476 |
| cve_search |  | http://seclists.org/fulldisclosure/2023/Oct/11 |
| cve_search |  | http://packetstormsecurity.com/files/174986/glibc-ld.so-Local-Privilege-Escalation.html |
| mageia |  | http://advisories.mageia.org/MGASA-2023-0286.html |
| secalert.redhat.com | http://packetstormsecurity.com/files/174986/glibc-ld.so-Local-Privilege-Escalation.html |  |
| secalert.redhat.com | http://seclists.org/fulldisclosure/2023/Oct/11 |  |
| secalert.redhat.com | http://www.openwall.com/lists/oss-security/2023/10/03/2 |  |
| secalert.redhat.com | http://www.openwall.com/lists/oss-security/2023/10/03/3 |  |
| secalert.redhat.com | http://www.openwall.com/lists/oss-security/2023/10/05/1 |  |
| secalert.redhat.com | https://access.redhat.com/errata/RHSA-2023:5453 |  |
| secalert.redhat.com | https://access.redhat.com/errata/RHSA-2023:5454 |  |
| secalert.redhat.com | https://access.redhat.com/errata/RHSA-2023:5455 |  |
| secalert.redhat.com | https://access.redhat.com/errata/RHSA-2023:5476 |  |
| secalert.redhat.com | https://access.redhat.com/security/cve/CVE-2023-4911 |  |
| secalert.redhat.com | https://bugzilla.redhat.com/show_bug.cgi?id=2238352 |  |
| secalert.redhat.com | https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4DBUQRRPB47TC3NJOUIBVWUGFHBJAFDL/ |  |
| secalert.redhat.com | https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DFG4P76UHHZEWQ26FWBXG76N2QLKKPZA/ |  |
| secalert.redhat.com | https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAQWHTSVOCOZ5K6KPIWKRT3JX4RTZUR/ |  |
| secalert.redhat.com | https://security.gentoo.org/glsa/202310-03 |  |
| secalert.redhat.com | https://www.debian.org/security/2023/dsa-5514 |  |
| secalert.redhat.com | https://www.qualys.com/2023/10/03/cve-2023-4911/looney-tunables-local-privilege-escalation-glibc-ld-so.txt |  |
| secalert.redhat.com | https://www.qualys.com/cve-2023-4911/ |  |
| amazon_linux_explore | https://access.redhat.com/security/cve/CVE-2023-4911 | https://explore.alas.aws.amazon.com/CVE-2023-4911.html |
| amazon_linux_explore | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4911 | https://explore.alas.aws.amazon.com/CVE-2023-4911.html |
| snyk | https://sourceware.org/git/?p=glibc.git;a=commit;h=1056e5b4c3f2d90ed2b4a55f96add28da2f4c8fa | https://security.snyk.io/vuln/SNYK-UNMANAGED-GLIBC-5929486 |
| snyk | https://www.qualys.com/2023/10/03/cve-2023-4911/looney-tunables-local-privilege-escalation-glibc-ld-so.txt | https://security.snyk.io/vuln/SNYK-UNMANAGED-GLIBC-5929486 |
| snyk | https://bugzilla.redhat.com/show_bug.cgi?id=2238352 | https://security.snyk.io/vuln/SNYK-UNMANAGED-GLIBC-5929486 |
| snyk | https://www.qualys.com/cve-2023-4911/ | https://security.snyk.io/vuln/SNYK-UNMANAGED-GLIBC-5929486 |
| secalert.redhat.com | http://www.openwall.com/lists/oss-security/2023/10/03/2 |  |
| secalert.redhat.com | http://www.openwall.com/lists/oss-security/2023/10/03/3 |  |
| secalert.redhat.com | http://www.openwall.com/lists/oss-security/2023/10/05/1 |  |
| secalert.redhat.com | https://access.redhat.com/errata/RHSA-2023:5453 |  |
| secalert.redhat.com | https://access.redhat.com/errata/RHSA-2023:5454 |  |
| secalert.redhat.com | https://access.redhat.com/errata/RHSA-2023:5455 |  |
| secalert.redhat.com | https://access.redhat.com/security/cve/CVE-2023-4911 |  |
| secalert.redhat.com | https://bugzilla.redhat.com/show_bug.cgi?id=2238352 |  |
| secalert.redhat.com | https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4DBUQRRPB47TC3NJOUIBVWUGFHBJAFDL/ |  |
| secalert.redhat.com | https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DFG4P76UHHZEWQ26FWBXG76N2QLKKPZA/ |  |
| secalert.redhat.com | https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAQWHTSVOCOZ5K6KPIWKRT3JX4RTZUR/ |  |
| secalert.redhat.com | https://security.gentoo.org/glsa/202310-03 |  |
| secalert.redhat.com | https://www.debian.org/security/2023/dsa-5514 |  |
| secalert.redhat.com | https://www.qualys.com/2023/10/03/cve-2023-4911/looney-tunables-local-privilege-escalation-glibc-ld-so.txt |  |
| secalert.redhat.com | https://www.qualys.com/cve-2023-4911/ |  |

</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://sourceware.org/git?p=glibc.git;a=commit;h=2ed18c5b534d9e92fc006202a5af0df6b72e7aca |  | redhat_bugzilla |
|  |  | https://sourceware.org/git/?p=glibc.git;a=commit;h=1056e5b4c3f2d90ed2b4a55f96add28da2f4c8fa |  | redhat_bugzilla |
|  |  | https://sourceware.org/git/?p=glibc.git;a=commit;h=1056e5b4c3f2d90ed2b4a55f96add28da2f4c8fa |  | snyk |

</details>

二、漏洞分析结构反馈
 影响性分析说明：
    GNU C 库的动态加载器ld.so在处理GLIBC_TUNABLES环境变量时有缓冲区溢出的漏洞。此问题可能允许本地攻击者在启动具有SUID权限的二进制文件时通过恶意制作的 GLIBC_TUNABLES 环境变量以提升权限执行代码。 
 openEuler评分：
  7.8
 Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
 受影响版本排查(受影响/不受影响)：
  1.openEuler-22.03-LTS(2.34):受影响
2.openEuler-22.03-LTS-SP1(2.34):受影响
3.openEuler-22.03-LTS-SP2(2.34):受影响
4.openEuler-20.03-LTS-SP1(2.28):不受影响
5.openEuler-20.03-LTS-SP3(2.28):不受影响

修复是否涉及abi变化(是/否)：
  1.openEuler-20.03-LTS-SP1(2.28):否
2.openEuler-20.03-LTS-SP3(2.28):否
3.openEuler-22.03-LTS(2.34):否
4.openEuler-22.03-LTS-SP1(2.34):否
5.openEuler-22.03-LTS-SP2(2.34):否

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2023-1725

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