CVE-2020-11078 — In httplib2 before version 0

In httplib2 before version 0.18.0, an attacker controlling unescaped part of uri for `httplib2.Http.request()` could change request headers and body, send additional hidden requests to same server. This vulnerability impacts software that uses httplib2 with uri constructed by str

01What is this vulnerability?

In httplib2 before version 0.18.0, an attacker controlling unescaped part of uri for `httplib2.Http.request()` could change request headers and body, send additional hidden requests to same server. This vulnerability impacts software that uses httplib2 with uri constructed by string concatenation, as opposed to proper urllib building with escaping. This has been fixed in 0.18.0.

02Affected products

Vendor	Product	Versions
httplib2	httplib2	< 0.81.0

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2020-05-20T16:00:16.000Z
• Last modified: 2024-08-04T11:21:14.627Z

09References

• github.com — https://github.com/httplib2/httplib2/security/advisories/GHSA-gg84-qgv9-w4pq
• github.com — https://github.com/httplib2/httplib2/commit/a1457cc31f3206cf691d11d2bf34e9886587…
• lists.apache.org — https://lists.apache.org/thread.html/rc9eff9572946142b657c900fe63ea4bbd3535911e8…
• lists.debian.org — https://lists.debian.org/debian-lts-announce/2020/06/msg00000.html
• lists.apache.org — https://lists.apache.org/thread.html/r23711190c2e98152cb6f216b95090d5eeb978543bb…
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
• lists.apache.org — https://lists.apache.org/thread.html/r69a462e690b5f2c3d418a288a2c98ae764d58587bd…
• lists.apache.org — https://lists.apache.org/thread.html/rad8872fc99f670958c2774e2bf84ee32a3a0562a0c…
• lists.apache.org — https://lists.apache.org/thread.html/r7f364000066748299b331b615ba51c62f55ab5b201…
• lists.apache.org — https://lists.apache.org/thread.html/r4d35dac106fab979f0db75a07fc4e320ad848b7221…