CVE-2023-4911— glibc 缓冲区错误漏洞
一分钟漏洞结论
影响对象
CVE-2023-4911
利用判断
已确认在野利用，应立即处置
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
glibc（GNU C Library）是GNU计划所实现的C标准库。 glibc存在缓冲区错误漏洞，该漏洞源于动态加载程序ld.so存在缓冲区溢出漏洞。
已观察到在野利用
github_trending · low
cisa_kev · confirmed
影响版本矩阵 13
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| None | None | 2.34< 2.39 |
affected |
| Red Hat | Red Hat Enterprise Linux 6 | 全部 |
unaffected |
| Red Hat | Red Hat Enterprise Linux 7 | 全部 |
unaffected |
全部 |
unaffected | ||
| Red Hat | Red Hat Enterprise Linux 8 | 0:2.28-225.el8_8.6< * |
unaffected |
0:2.28-225.el8_8.6< * |
unaffected | ||
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support | 0:2.28-189.6.el8_6< * |
unaffected |
| Red Hat | Red Hat Enterprise Linux 9 | 0:2.34-60.el9_2.7< * |
unaffected |
0:2.34-60.el9_2.7< * |
unaffected | ||
| Red Hat | Red Hat Enterprise Linux 9.0 Extended Update Support | 0:2.34-28.el9_0.4< * |
unaffected |
| Red Hat | Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 | 0:2.28-189.6.el8_6< * |
unaffected |
0:4.5.3-10.el8ev< * |
unaffected | ||
0:4.5.3-202312060823_8.6< * |
unaffected |
一、 漏洞 CVE-2023-4911 基础信息
漏洞信息
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Vulnerability Title
Glibc: buffer overflow in ld.so leading to privilege escalation
来源: CVE Program / CVE List V5
Vulnerability Description
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.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
来源: CVE Program / CVE List V5
Vulnerability Title
glibc 缓冲区错误漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
glibc（GNU C Library）是GNU计划所实现的C标准库。 glibc存在缓冲区错误漏洞，该漏洞源于动态加载程序ld.so存在缓冲区溢出漏洞。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| - | - | 2.34 ~ 2.39 | - |
|
| Red Hat | Red Hat Enterprise Linux 8 | 0:2.28-225.el8_8.6 ~ * |
cpe:/a:redhat:enterprise_linux:8::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8 | 0:2.28-225.el8_8.6 ~ * |
cpe:/a:redhat:enterprise_linux:8::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support | 0:2.28-189.6.el8_6 ~ * |
cpe:/o:redhat:rhel_eus:8.6::baseos
|
|
| Red Hat | Red Hat Enterprise Linux 9 | 0:2.34-60.el9_2.7 ~ * |
cpe:/a:redhat:enterprise_linux:9::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 9 | 0:2.34-60.el9_2.7 ~ * |
cpe:/a:redhat:enterprise_linux:9::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 9.0 Extended Update Support | 0:2.34-28.el9_0.4 ~ * |
cpe:/a:redhat:rhel_eus:9.0::appstream
|
|
| Red Hat | Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 | 0:2.28-189.6.el8_6 ~ * |
cpe:/o:redhat:rhel_eus:8.6::baseos
|
|
| Red Hat | Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 | 0:4.5.3-10.el8ev ~ * |
cpe:/o:redhat:rhev_hypervisor:4.4::el8
|
|
| Red Hat | Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 | 0:4.5.3-202312060823_8.6 ~ * |
cpe:/o:redhat:rhev_hypervisor:4.4::el8
|
|
| Red Hat | Red Hat Enterprise Linux 6 | - |
cpe:/o:redhat:enterprise_linux:6
|
|
| Red Hat | Red Hat Enterprise Linux 7 | - |
cpe:/o:redhat:enterprise_linux:7
|
|
| Red Hat | Red Hat Enterprise Linux 7 | - |
cpe:/o:redhat:enterprise_linux:7
|
|
二、漏洞 CVE-2023-4911 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|---|---|---|
| 1 | https://www.qualys.com/2023/10/03/cve-2023-4911/looney-tunables-local-privilege-escalation-glibc-ld-so.txt | https://github.com/Green-Avocado/CVE-2023-4911 | POC详情 |
| 2 | PoC for CVE-2023-4911 | https://github.com/leesh3288/CVE-2023-4911 | POC详情 |
| 3 | CVE-2023-4911 proof of concept | https://github.com/RickdeJager/CVE-2023-4911 | POC详情 |
| 4 | None | https://github.com/xiaoQ1z/CVE-2023-4911 | POC详情 |
| 5 | CVE-2023-4911 | https://github.com/silent6trinity/looney-tuneables | POC详情 |
| 6 | None | https://github.com/hadrian3689/looney-tunables-CVE-2023-4911 | POC详情 |
| 7 | CVE-2023-4911 | https://github.com/ruycr4ft/CVE-2023-4911 | POC详情 |
| 8 | PoC for CVE-2023-4911 LooneyTuneables | https://github.com/guffre/CVE-2023-4911 | POC详情 |
| 9 | Exploit tool for CVE-2023-4911, targeting the 'Looney Tunables' glibc vulnerability in various Linux distributions. | https://github.com/chaudharyarjun/LooneyPwner | POC详情 |
| 10 | Looney Tunables Local privilege escalation (CVE-2023-4911) workshop | https://github.com/KernelKrise/CVE-2023-4911 | POC详情 |
| 11 | Proof of concept for CVE-2023-4911 (Looney Tunables) discovered by Qualys Threat Research Unit | https://github.com/Diego-AltF4/CVE-2023-4911 | POC详情 |
| 12 | Looney Tunables CVE-2023-4911 | https://github.com/teraGL/looneyCVE | POC详情 |
| 13 | PoC of CVE-2023-4911 | https://github.com/snurkeburk/Looney-Tunables | POC详情 |
| 14 | None | https://github.com/puckiestyle/CVE-2023-4911 | POC详情 |
| 15 | None | https://github.com/yanfernandess/Looney-Tunables-CVE-2023-4911 | POC详情 |
| 16 | Repository containing a Proof of Concept (PoC) demonstrating the impact of CVE-2023-4911, a vulnerability in glibc's ld.so dynamic loader, exposing risks related to Looney Tunables. | https://github.com/NishanthAnand21/CVE-2023-4911-PoC | POC详情 |
| 17 | PoC for CVE-2023-4911 | https://github.com/xem6/CVE-2023-4911 | POC详情 |
| 18 | CVE-2023-4911-Looney-Tunables | https://github.com/Billar42/CVE-2023-4911 | POC详情 |
| 19 | None | https://github.com/dungNHVhust/CVE-2023-4911 | POC详情 |
| 20 | CVE-2023-4911 exploit | https://github.com/shacojx/CVE-2023-4911-Exploit | POC详情 |
| 21 | None | https://github.com/KillReal01/CVE-2023-4911 | POC详情 |
| 22 | 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. | https://github.com/projectdiscovery/nuclei-templates/blob/main/code/cves/2023/CVE-2023-4911.yaml | POC详情 |
| 23 | None | https://github.com/RRespxwnss/Looney-Tunables-CVE-2023-4911 | POC详情 |
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CVE-2023-4911 厂商安全公告 (11)
CVE-2023-4911 公开利用代码 (2)
CVE-2023-4911 邮件列表归档 (8)
CVE-2023-4911 其他参考 (2)
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