Vulnerability in Bottlepy Bottle

CVE-2016-9964

redirect() in bottle.py in bottle 0.12.10 doesn't filter a "\r\n" sequence, which leads to a CRLF attack, as demonstrated by a redirect("233\r\nSet-Cookie: name=salt") call.

Vulnerability class: CRLF Injection

EPSS: 0.012 (79.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

  • cve@mitre.org (x_refsource_CONFIRM, Patch, Third Party Advisory, Issue Tracking)
  • cve@mitre.org (x_refsource_CONFIRM, Patch, Third Party Advisory, Issue Tracking)
  • DSA-3743 (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
  • 94961 (Third Party Advisory, VDB Entry, vdb-entry, x_refsource_BID)

Frequently asked questions

What is CVE-2016-9964?
CVE-2016-9964 is a medium-severity vulnerability in Bottlepy Bottle, classified under CRLF Injection. CVSS score: 6.5/10. Published 2016-12-16.
How severe is CVE-2016-9964?
Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2016-9964 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.