MSRC_CVE-2019-18348

Vulnerability from csaf_microsoft - Published: 2019-10-02 00:00 - Updated: 2020-11-10 00:00
Summary
An issue was discovered in urllib2 in Python 2.x through 2.7.17 and urllib in Python 3.x through 3.8.0. CRLF injection is possible if the attacker controls a url parameter as demonstrated by the first argument to urllib.request.urlopen with \r\n (specifically in the host component of a URL) followed by an HTTP header. This is similar to the CVE-2019-9740 query string issue and the CVE-2019-9947 path string issue. (This is not exploitable when glibc has CVE-2016-10739 fixed.). This is fixed in: v2.7.18 v2.7.18rc1; v3.5.10 v3.5.10rc1; v3.6.11 v3.6.11rc1 v3.6.12; v3.7.8 v3.7.8rc1 v3.7.9; v3.8.3 v3.8.3rc1 v3.8.4 v3.8.4rc1 v3.8.5 v3.8.6 v3.8.6rc1.

Notes

Additional Resources
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer
The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
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{
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      "tlp": {
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        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
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    "references": [
      {
        "category": "self",
        "summary": "CVE-2019-18348 An issue was discovered in urllib2 in Python 2.x through 2.7.17 and urllib in Python 3.x through 3.8.0. CRLF injection is possible if the attacker controls a url parameter as demonstrated by the first argument to urllib.request.urlopen with \\r\\n (specifically in the host component of a URL) followed by an HTTP header. This is similar to the CVE-2019-9740 query string issue and the CVE-2019-9947 path string issue. (This is not exploitable when glibc has CVE-2016-10739 fixed.). This is fixed in: v2.7.18 v2.7.18rc1; v3.5.10 v3.5.10rc1; v3.6.11 v3.6.11rc1 v3.6.12; v3.7.8 v3.7.8rc1 v3.7.9; v3.8.3 v3.8.3rc1 v3.8.4 v3.8.4rc1 v3.8.5 v3.8.6 v3.8.6rc1. - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2019/msrc_cve-2019-18348.json"
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        "category": "external",
        "summary": "Microsoft Support Lifecycle",
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      {
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        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
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    ],
    "title": "An issue was discovered in urllib2 in Python 2.x through 2.7.17 and urllib in Python 3.x through 3.8.0. CRLF injection is possible if the attacker controls a url parameter as demonstrated by the first argument to urllib.request.urlopen with \\r\\n (specifically in the host component of a URL) followed by an HTTP header. This is similar to the CVE-2019-9740 query string issue and the CVE-2019-9947 path string issue. (This is not exploitable when glibc has CVE-2016-10739 fixed.). This is fixed in: v2.7.18 v2.7.18rc1; v3.5.10 v3.5.10rc1; v3.6.11 v3.6.11rc1 v3.6.12; v3.7.8 v3.7.8rc1 v3.7.9; v3.8.3 v3.8.3rc1 v3.8.4 v3.8.4rc1 v3.8.5 v3.8.6 v3.8.6rc1.",
    "tracking": {
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  "vulnerabilities": [
    {
      "cve": "CVE-2019-18348",
      "cwe": {
        "id": "CWE-74",
        "name": "Improper Neutralization of Special Elements in Output Used by a Downstream Component (\u0027Injection\u0027)"
      },
      "notes": [
        {
          "category": "general",
          "text": "mitre",
          "title": "Assigning CNA"
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        "known_affected": [
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      "references": [
        {
          "category": "self",
          "summary": "CVE-2019-18348 An issue was discovered in urllib2 in Python 2.x through 2.7.17 and urllib in Python 3.x through 3.8.0. CRLF injection is possible if the attacker controls a url parameter as demonstrated by the first argument to urllib.request.urlopen with \\r\\n (specifically in the host component of a URL) followed by an HTTP header. This is similar to the CVE-2019-9740 query string issue and the CVE-2019-9947 path string issue. (This is not exploitable when glibc has CVE-2016-10739 fixed.). This is fixed in: v2.7.18 v2.7.18rc1; v3.5.10 v3.5.10rc1; v3.6.11 v3.6.11rc1 v3.6.12; v3.7.8 v3.7.8rc1 v3.7.9; v3.8.3 v3.8.3rc1 v3.8.4 v3.8.4rc1 v3.8.5 v3.8.6 v3.8.6rc1. - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2019/msrc_cve-2019-18348.json"
        }
      ],
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        {
          "category": "vendor_fix",
          "date": "2020-11-10T00:00:00.000Z",
          "details": "3.7.10-3:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
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          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        }
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      "scores": [
        {
          "cvss_v3": {
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            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "environmentalsScore": 0.0,
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "temporalScore": 6.1,
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "16820-1"
          ]
        }
      ],
      "title": "An issue was discovered in urllib2 in Python 2.x through 2.7.17 and urllib in Python 3.x through 3.8.0. CRLF injection is possible if the attacker controls a url parameter as demonstrated by the first argument to urllib.request.urlopen with \\r\\n (specifically in the host component of a URL) followed by an HTTP header. This is similar to the CVE-2019-9740 query string issue and the CVE-2019-9947 path string issue. (This is not exploitable when glibc has CVE-2016-10739 fixed.). This is fixed in: v2.7.18 v2.7.18rc1; v3.5.10 v3.5.10rc1; v3.6.11 v3.6.11rc1 v3.6.12; v3.7.8 v3.7.8rc1 v3.7.9; v3.8.3 v3.8.3rc1 v3.8.4 v3.8.4rc1 v3.8.5 v3.8.6 v3.8.6rc1."
    }
  ]
}


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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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.