CVE-2020-14344
Quick assessment
Affected
The X11 Project libX11
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
X.Org libX11是X.Org基金会的一个X11（X Window系统）客户端库。 X.Org libX11 1.6.10之前版本中的X Input Method（XIM）客户端存在输入验证错误漏洞。该漏洞源于网络系统或产品未对输入的数据进行正确的验证。
Possible ATT&CK Techniques 2 AI
T1068 · Exploitation for Privilege Escalation T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2020-14344
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An integer overflow leading to a heap-buffer overflow was found in The X Input Method (XIM) client was implemented in libX11 before version 1.6.10. As per upstream this is security relevant when setuid programs call XIM client functions while running with elevated privileges. No such programs are shipped with Red Hat Enterprise Linux.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Vulnerability Title
X.Org libX11 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
X.Org libX11是X.Org基金会的一个X11（X Window系统）客户端库。 X.Org libX11 1.6.10之前版本中的X Input Method（XIM）客户端存在输入验证错误漏洞。该漏洞源于网络系统或产品未对输入的数据进行正确的验证。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| The X11 Project | libX11 | 1.6.10 | - |
|
II. Public POCs for CVE-2020-14344
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2020-14344 (3)
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https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14344 x_refsource_CONFIRM
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Mailing List Discussions for CVE-2020-14344 (9)
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https://lists.x.org/archives/xorg-announce/2020-July/003050.html x_refsource_MISC
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https://www.openwall.com/lists/oss-security/2020/07/31/1 x_refsource_MISC
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http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00015.html vendor-advisory x_refsource_SUSE
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http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00024.html vendor-advisory x_refsource_SUSE
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http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00031.html vendor-advisory x_refsource_SUSE
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http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00014.html vendor-advisory x_refsource_SUSE
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7AVXCQOSCAPKYYHFIJAZ6E2C7LJBTLXF/ vendor-advisory x_refsource_FEDORA
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4VDDSAYV7XGNRCXE7HCU23645MG74OFF/ vendor-advisory x_refsource_FEDORA
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XY4H2SIEF2362AMNX5ZKWAELGU7LKFJB/ vendor-advisory x_refsource_FEDORA
IV. Related Vulnerabilities
Same product: libX11
-
CVE-2026-94285
Out-of-bounds read in libX11's byte-oriented codeset parser -
CVE-2026-94284
Out-of-bounds read vulnerability in libX11's XIM trigger-key -
CVE-2026-94283
Out-of-bounds read vulnerability in libX11's XIM (X Input Me -
CVE-2026-88806
libX11 XkbGetMap Reply Heap-based Buffer Overflow -
CVE-2023-3138
X.Org libX11 缓冲区错误漏洞
Same vendor: The X11 Project
Same weakness: CWE-190
-
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V. Comments for CVE-2020-14344
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