CVE-2020-24240
Quick assessment
Affected
n/a n/a
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.
GNU Bison是GNU计划的一款编程语言解析器的生成器。 GUN Bison 3.7版本存在UAF漏洞，该漏洞可以导致系统异常。
Possible ATT&CK Techniques 1 AI
T1211 · Exploitation for Stealth
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I. Basic Information for CVE-2020-24240
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
GNU Bison before 3.7.1 has a use-after-free in _obstack_free in lib/obstack.c (called from gram_lex) when a '\0' byte is encountered. NOTE: there is a risk only if Bison is used with untrusted input, and the observed bug happens to cause unsafe behavior with a specific compiler/architecture. The bug report was intended to show that a crash may occur in Bison itself, not that a crash may occur in code that is generated by Bison.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
GNU Bison 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNU Bison是GNU计划的一款编程语言解析器的生成器。 GUN Bison 3.7版本存在UAF漏洞，该漏洞可以导致系统异常。
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 |
|---|---|---|---|---|
| - | n/a | n/a | - |
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II. Public POCs for CVE-2020-24240
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2020-24240 (1)
Mailing List Discussions for CVE-2020-24240 (1)
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https://lists.gnu.org/r/bug-bison/2020-07/msg00051.html x_refsource_MISC
Other References for CVE-2020-24240 (1)
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https://github.com/akimd/bison/compare/v3.7...v3.7.1 x_refsource_MISC
Same Patch Batch · n/a · 2020-08-25 · 13 CVEs total
| CVE-2019-14904 | Ansible solaris_zone模块操作系统命令注入漏洞 | |
| CVE-2020-19005 | zrlog 安全漏洞 | |
| CVE-2020-15777 | Gradle 代码问题漏洞 | |
| CVE-2020-16197 | Octopus Deploy 信任管理问题漏洞 | |
| CVE-2020-24622 | Sonatype Nexus Repository 信息泄露漏洞 | |
| CVE-2020-16245 | Advantech iView 路径遍历漏洞 | |
| CVE-2020-24616 | FasterXML jackson-databind 代码问题漏洞 | |
| CVE-2020-14042 | Codiad 跨站脚本漏洞 | |
| CVE-2020-24609 | Savsoft Quiz 5 跨站脚本漏洞 | |
| CVE-2020-24242 | Netwide Assembler 安全漏洞 | |
| CVE-2020-24241 | Netwide Assembler 资源管理错误漏洞 | |
| CVE-2020-24614 | Fossil 代码注入漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2020-24240
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