Upstream information

CVE-2021-41259 at MITRE

Description

Nim is a systems programming language with a focus on efficiency, expressiveness, and elegance. In affected versions the uri.parseUri function which may be used to validate URIs accepts null bytes in the input URI. This behavior could be used to bypass URI validation. For example: parseUri("http://localhost\0hello").hostname is set to "localhost\0hello". Additionally, httpclient.getContent accepts null bytes in the input URL and ignores any data after the first null byte. Example: getContent("http://localhost\0hello") makes a request to localhost:80. An attacker can use a null bytes to bypass the check and mount a SSRF attack.

SUSE information

Overall state of this security issue: Does not affect SUSE products

This issue is currently rated as having important severity.

CVSS v3 Scores
  National Vulnerability Database
Base Score 8.6
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Access Vector Network
Access Complexity Low
Privileges Required None
User Interaction None
Scope Changed
Confidentiality Impact High
Integrity Impact None
Availability Impact None
CVSSv3 Version 3.1
SUSE Bugzilla entry: 1192712 [IN_PROGRESS]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Package Hub for SUSE Linux Enterprise 15 SP2
  • nim >= 1.2.12-bp152.4.6.1
 Patchnames:
openSUSE-2021-1592
openSUSE Leap 15.2
  • nim >= 1.2.12-lp152.2.6.1
 Patchnames:
openSUSE-2021-1585