CVE-2020-28493— Regular Expression Denial of Service (ReDoS)
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I. Basic Information for CVE-2020-28493
Vulnerability Information
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Vulnerability Title
Regular Expression Denial of Service (ReDoS)
Source: NVD (National Vulnerability Database)
Vulnerability Description
This affects the package jinja2 from 0.0.0 and before 2.11.3. The ReDoS vulnerability is mainly due to the `_punctuation_re regex` operator and its use of multiple wildcards. The last wildcard is the most exploitable as it searches for trailing punctuation. This issue can be mitigated by Markdown to format user content instead of the urlize filter, or by implementing request timeouts and limiting process memory.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Jinja2 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Jinja2是一款基于Python的模板引擎。该产品具有完整的Unicode支持，并提供了可选的沙箱模板执行环境。 jinja2 from 0.0.0 and before 2.11.3 存在资源管理错误漏洞，该漏洞源于regex的ReDOS漏洞。
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 |
|---|---|---|---|---|
| - | jinja2 | 0.0.0 ~ unspecified | - |
II. Public POCs for CVE-2020-28493
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://snyk.io/vuln/SNYK-PYTHON-JINJA2-1012994x_refsource_MISC
- https://github.com/pallets/jinja/pull/1343x_refsource_MISC
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PVAKCOO7VBVUBM3Q6CBBTPBFNP5NDXF4/vendor-advisoryx_refsource_FEDORA
- https://nvd.nist.gov/vuln/detail/CVE-2020-28493
Same Patch Batch · n/a · 2021-02-01 · 42 CVEs total
| CVE-2021-23330 | 9.8 CRITICAL | Command Injection |
| CVE-2020-28426 | 7.3 HIGH | Command Injection |
| CVE-2020-15836 | Mofi Network MOFI4500-4GXeLTE 安全漏洞 | |
| CVE-2020-13562 | Sourceforge PhpGACL 跨站脚本漏洞 | |
| CVE-2020-24271 | EasyCMS 跨站请求伪造漏洞 | |
| CVE-2020-36109 | ASUS RT-AX86U 安全漏洞 | |
| CVE-2020-28194 | Cccel-ppp 数字错误漏洞 | |
| CVE-2021-3350 | MyBB 跨站脚本漏洞 | |
| CVE-2021-3349 | GNOME Evolution 数据伪造问题漏洞 | |
| CVE-2021-3348 | Linux kernel 资源管理错误漏洞 | |
| CVE-2020-13858 | Mofi Network MOFI4500-4GXeLTE 信任管理问题漏洞 | |
| CVE-2020-13564 | Sourceforge PhpGACL 跨站脚本漏洞 | |
| CVE-2020-15835 | Mofi Network MOFI4500-4GXeLTE 授权问题漏洞 | |
| CVE-2020-15834 | Mofi Network MOFI4500-4GXeLTE 信息泄露漏洞 | |
| CVE-2020-15833 | Mofi Network MOFI4500-4GXeLTE 信任管理问题漏洞 | |
| CVE-2020-15832 | Mofi Network MOFI4500-4GXeLTE 安全漏洞 | |
| CVE-2020-13860 | Mofi Network MOFI4500-4GXeLTE 安全特征问题漏洞 | |
| CVE-2020-13859 | Mofi Network MOFI-GXeLTE 安全漏洞 | |
| CVE-2020-13856 | Mofi Network MOFI4500-4GXeLTE 安全漏洞 | |
| CVE-2020-13857 | Mofi Network MOFI4500-4GXeLTE 安全漏洞 |
Showing top 20 of 42 CVEs. View all on vendor page → →
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