CVE-2018-7753: Input Validation
First published: Wed Mar 07 2018(Updated: )
An issue was discovered in Bleach 2.1.x before 2.1.3. Attributes that have URI values weren't properly sanitized if the values contained character entities. Using character entities, it was possible to construct a URI value with a scheme that was not allowed that would slide through unsanitized.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| pip/bleach | >=2.1.0<2.1.3 | 2.1.3 |
| Mozilla Bleach | =2.1 | |
| Mozilla Bleach | =2.1.1 | |
| Mozilla Bleach | =2.1.2 | |
| =2.1 | ||
| =2.1.1 | ||
| =2.1.2 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2018-7753
- https://github.com/mozilla/bleach/commit/c5df5789ec3471a31311f42c2d19fc2cf21b35ef
- https://bugs.debian.org/892252
- https://github.com/advisories/GHSA-m9mq-p2f9-cfqv (Advisory)
- https://github.com/mozilla/bleach/releases/tag/v2.1.3
- https://github.com/pypa/advisory-database/tree/main/vulns/bleach/PYSEC-2018-51.yaml
Frequently Asked Questions
What is the severity of CVE-2018-7753?
CVE-2018-7753 is rated as a medium severity vulnerability.
How do I fix CVE-2018-7753?
To fix CVE-2018-7753, upgrade Bleach to version 2.1.3 or later.
What versions of Bleach are affected by CVE-2018-7753?
Bleach versions 2.1.0, 2.1.1, and 2.1.2 are affected by CVE-2018-7753.
What is the nature of the vulnerability in CVE-2018-7753?
CVE-2018-7753 involves improper sanitization of URI attribute values, allowing unauthorized schemes to pass through.
Is there a patch for CVE-2018-7753?
Yes, a patch was introduced in Bleach version 2.1.3 to address CVE-2018-7753.
- collector/nvd-index
- agent/type
- agent/author
- agent/weakness
- agent/severity
- agent/remedy
- agent/description
- collector/github-advisory-latest
- source/GitHub
- alias/GHSA-m9mq-p2f9-cfqv
- alias/CVE-2018-7753
- agent/software-canonical-lookup
- agent/references
- agent/softwarecombine
- collector/nvd-cve
- source/NVD
- collector/github-advisory
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/first-publish-date
- agent/event
- agent/trending
- agent/tags
- agent/source
- vendor/mozilla
- canonical/mozilla bleach
- version/mozilla bleach/2.1
- version/mozilla bleach/2.1.1
- version/mozilla bleach/2.1.2
- package-manager/pip