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CVE-2021-3826

Quick assessment

Affected
n/a gcc
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.

libiberty是GNU社区的其中的一个GNU程序使用的子程序的集合。 GNU libiberty存在安全漏洞，该漏洞源于d-demangle.c 中的 dlang_lname 函数存在堆栈缓冲区溢出，攻击者利用该漏洞可以通过精心制作的损坏符号潜在地导致拒绝服务。

AI Predicted 5.5 Difficulty: Moderate EPSS 1.38% · P71

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth
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I. Basic Information for CVE-2021-3826

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Heap/stack buffer overflow in the dlang_lname function in d-demangle.c in libiberty allows attackers to potentially cause a denial of service (segmentation fault and crash) via a crafted mangled symbol.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
内存缓冲区边界内操作的限制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
GNU libiberty 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libiberty是GNU社区的其中的一个GNU程序使用的子程序的集合。 GNU libiberty存在安全漏洞，该漏洞源于d-demangle.c 中的 dlang_lname 函数存在堆栈缓冲区溢出，攻击者利用该漏洞可以通过精心制作的损坏符号潜在地导致拒绝服务。
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
- gcc gcc 11.2.0 -

II. Public POCs for CVE-2021-3826

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III. Intelligence Information for CVE-2021-3826

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Mailing List Discussions for CVE-2021-3826 (4)

Other References for CVE-2021-3826 (2)

Same Patch Batch · n/a · 2022-09-01 · 49 CVEs total

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CVE-2022-36621 SAMSUNG mTower 代码问题漏洞
CVE-2022-2639 Linux kernel 数字错误漏洞
CVE-2022-2738 Red Hat Enterprise Linux 资源管理错误漏洞
CVE-2022-2739 Red Hat Enterprise Linux 信息泄露漏洞
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CVE-2022-23452 barbican 授权问题漏洞
CVE-2022-2447 OpenStack 安全漏洞
CVE-2022-2238 Red Hat search-api 资源管理错误漏洞
CVE-2022-2256 Red Hat Keycloak 跨站脚本漏洞
CVE-2022-1677 Red Hat OpenShift Container Platform 资源管理错误漏洞
CVE-2022-36604 Canaan Avalon ASIC Miner 访问控制错误漏洞
CVE-2022-36603 InnoSilicon T3T+ 安全漏洞
CVE-2022-36602 InnoSilicon A10 安全漏洞
CVE-2022-36601 JASMINER X4 Server 安全漏洞
CVE-2020-27784 Linux kernel 资源管理错误漏洞
CVE-2020-35533 Libraw 缓冲区错误漏洞
CVE-2020-35534 Libraw 安全漏洞
CVE-2020-35535 Libraw 缓冲区错误漏洞

Showing top 20 of 49 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: gcc
Same vendor: n/a
Same weakness: CWE-119

V. Comments for CVE-2021-3826

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