CVE-2016-20013
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.
Sha256 Crypt和Sha512 Crypt都是Ulrich Drepper个人开发者的一种加密散列函数。 Sha256 Crypt和Sha512 Crypt 存在安全漏洞，该漏洞允许攻击者可利用该漏洞导致拒绝服务(CPU消耗)，因为算法的运行时间与密码长度的平方成正比。
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2016-20013
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
sha256crypt and sha512crypt through 0.6 allow attackers to cause a denial of service (CPU consumption) because the algorithm's runtime is proportional to the square of the length of the password.
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
Sha256 Crypt和Sha512 Crypt 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sha256 Crypt和Sha512 Crypt都是Ulrich Drepper个人开发者的一种加密散列函数。 Sha256 Crypt和Sha512 Crypt 存在安全漏洞，该漏洞允许攻击者可利用该漏洞导致拒绝服务(CPU消耗)，因为算法的运行时间与密码长度的平方成正比。
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-2016-20013
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2016-20013 (3)
-
https://akkadia.org/drepper/SHA-crypt.txt x_refsource_MISC
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https://twitter.com/solardiz/status/795601240151457793 x_refsource_MISC
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IV. Related Vulnerabilities
V. Comments for CVE-2016-20013
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