SUSE-SU-2021:0601-1

Vulnerability from csaf_suse - Published: 2021-02-25 12:16 - Updated: 2021-02-25 12:16
Summary
Security update for python-Jinja2

Notes

Title of the patch
Security update for python-Jinja2
Description of the patch
This update for python-Jinja2 fixes the following issues: - CVE-2020-28493: Improve the speed of the 'urlize' filter by reducing regex backtracking. Email matching requires a word character at the start of the domain part, and only word characters in the TLD. (bsc#1181944)
Patchnames
SUSE-2021-601,SUSE-OpenStack-Cloud-7-2021-601,SUSE-SLE-POS-12-SP2-2021-601
Terms of use
CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
To clipboard 

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        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "This affects the package jinja2 from 0.0.0 and before 2.11.3. The ReDoS vulnerability is mainly due to the `_punctuation_re regex` operator and its use of multiple wildcards. The last wildcard is the most exploitable as it searches for trailing punctuation. This issue can be mitigated by Markdown to format user content instead of the urlize filter, or by implementing request timeouts and limiting process memory.",
          "title": "CVE description"
        }
      ],
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          "url": "https://bugzilla.suse.com/1181944"
        }
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          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
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      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
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          "date": "2021-02-25T12:16:32Z",
          "details": "important"
        }
      ],
      "title": "CVE-2020-28493"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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