CVE-2018-20821
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.
LibSass是一个开源的使用C语言编写的Sass（CSS扩展语言）解析器。 LibSass 3.5.5及之前版本中的解析组件存在安全漏洞。攻击者可借助lep文件利用该漏洞造成拒绝服务。
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2018-20821
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The parsing component in LibSass through 3.5.5 allows attackers to cause a denial-of-service (uncontrolled recursion in Sass::Parser::parse_css_variable_value in parser.cpp).
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
LibSass 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LibSass是一个开源的使用C语言编写的Sass（CSS扩展语言）解析器。 LibSass 3.5.5及之前版本中的解析组件存在安全漏洞。攻击者可借助lep文件利用该漏洞造成拒绝服务。
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 |
|---|---|---|---|---|
| - | n/a | n/a | - |
|
II. Public POCs for CVE-2018-20821
| # | POC Description | Source Link | Shenlong Link |
|---|
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Mailing List Discussions for CVE-2018-20821 (3)
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http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.html vendor-advisory x_refsource_SUSE
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http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.html vendor-advisory x_refsource_SUSE
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http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.html vendor-advisory x_refsource_SUSE
Other References for CVE-2018-20821 (1)
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https://github.com/sass/libsass/issues/2658 x_refsource_MISC
Same Patch Batch · n/a · 2019-04-23 · 23 CVEs total
| CVE-2019-11474 | GraphicsMagick 输入验证错误漏洞 | |
| CVE-2019-11487 | Linux kernel 资源管理错误漏洞 | |
| CVE-2019-11486 | Linux kernel 竞争条件问题漏洞 | |
| CVE-2019-10688 | Polycom VVX products 信任管理问题漏洞 | |
| CVE-2018-8825 | TensorFlow 缓冲区错误漏洞 | |
| CVE-2018-7576 | TensorFlow 代码问题漏洞 | |
| CVE-2019-10711 | Hisilicon Hi3510 权限许可和访问控制问题漏洞 | |
| CVE-2019-7727 | NICE Engage 权限许可和访问控制问题漏洞 | |
| CVE-2019-10710 | Hisilicon Hi3510 授权问题漏洞 | |
| CVE-2019-10864 | WordPress WP Statistics插件跨站脚本漏洞 | |
| CVE-2019-11076 | Cribl UI 命令注入漏洞 | |
| CVE-2019-11463 | libarchive 资源管理错误漏洞 | |
| CVE-2019-11473 | GraphicsMagick 缓冲区错误漏洞 | |
| CVE-2019-11472 | ImageMagick Studio ImageMagick 数字错误漏洞 | |
| CVE-2019-11471 | libheif 资源管理错误漏洞 | |
| CVE-2019-11470 | ImageMagick Studio ImageMagick 资源管理错误漏洞 | |
| CVE-2018-20822 | LibSass 资源管理错误漏洞 | |
| CVE-2018-20820 | Dropbox Lepton 输入验证错误漏洞 | |
| CVE-2018-20819 | Dropbox Lepton 缓冲区错误漏洞 | |
| CVE-2018-17169 | PrinterOn Enterprise 代码问题漏洞 |
Showing top 20 of 23 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2018-20821
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