7.5high
CVE-2016-20013
sha256crypt and sha512crypt through 0.6 allow attackers to cause a denial of service (CPU consumption) because the algorithm's runtime is p…
Published 4 y ago · modified 4 mo ago · JSON
CVSS
7.5
v3.1 · NVD
CISA KEV
No
not known exploited
EPSS
2.2%
percentile 82%
Public exploits
0
none known
Summary
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.
Exploit prediction (EPSS)
2.17% probability of exploitation in the next 30 days, higher than 82% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
- CWE-770 Allocation of Resources Without Limits or Throttling
References
- twitter.com /solardiz/status/795601240151457793 · x_refsource_MISC, x_transferred
- pthree.org /2018/05/23/do-not-use-sha256crypt-sha512crypt-theyre-dangerous/ · x_refsource_MISC, x_transferred
- akkadia.org /drepper/SHA-crypt.txt · x_refsource_MISC, x_transferred
Sources
- CVE List: CVE-2016-20013
- NVD: CVE-2016-20013
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