CVE-2019-20446
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Last Modified:
Insights vulnerability analysis
Description
The CVE Program describes this issue as:
In xml.rs in GNOME librsvg before 2.46.2, a crafted SVG file with nested patterns can cause denial of service when passed to the library for processing. The attacker constructs pattern elements so that the number of final rendered objects grows exponentially.
Statement
This flaw is similar to billion laughs. A specially-crafted XML file can cause librsvg to consume excessive memory and result in denial of service. This flaw also affects browsers. Currently Mozilla and Google are working on updates for Firefox and Chromium browser respectively.
Mitigation
This flaw is triggered when untrusted XML files are parsed with applications compiled with librsvg2 library. Applications which do not parse untrusted XML files are not affected by this flaw.
Additional information
- Bugzilla 1797608: librsvg: Resource exhaustion via crafted SVG file with nested patterns
- CWE-400: Uncontrolled Resource Consumption
- FAQ: Frequently asked questions about CVE-2019-20446
Common Vulnerability Scoring System (CVSS) Score Details
Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
Red Hat | NVD | |
---|---|---|
CVSS v3 Base Score | 6.5 | 6.5 |
Attack Vector | Network | Network |
Attack Complexity | Low | Low |
Privileges Required | None | None |
User Interaction | Required | Required |
Scope | Unchanged | Unchanged |
Confidentiality Impact | None | None |
Integrity Impact | None | None |
Availability Impact | High | High |
CVSS v3 Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Frequently Asked Questions
Why is Red Hat's CVSS v3 score or Impact different from other vendors?
My product is listed as "Under investigation" or "Affected", when will Red Hat release a fix for this vulnerability?
What can I do if my product is listed as "Will not fix"?
What can I do if my product is listed as "Fix deferred"?
What is a mitigation?
I have a Red Hat product but it is not in the above list, is it affected?
Why is my security scanner reporting my product as vulnerable to this vulnerability even though my product version is fixed or not affected?
My product is listed as "Out of Support Scope". What does this mean?
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