ghsa-hxcc-f52p-wc94
Vulnerability from github
Published
2020-08-11 17:21
Modified
2021-09-23 18:50
Severity ?
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Insecure serialization leading to RCE in serialize-javascript
Details

serialize-javascript prior to 3.1.0 allows remote attackers to inject arbitrary code via the function "deleteFunctions" within "index.js".

An object such as {"foo": /1"/, "bar": "a\"@__R-<UID>-0__@"} was serialized as {"foo": /1"/, "bar": "a\/1"/}, which allows an attacker to escape the bar key. This requires the attacker to control the values of both foo and bar and guess the value of <UID>. The UID has a keyspace of approximately 4 billion making it a realistic network attack.

Show details on source website

To clipboard 

{
   affected: [
      {
         package: {
            ecosystem: "npm",
            name: "serialize-javascript",
         },
         ranges: [
            {
               events: [
                  {
                     introduced: "0",
                  },
                  {
                     fixed: "3.1.0",
                  },
               ],
               type: "ECOSYSTEM",
            },
         ],
      },
   ],
   aliases: [
      "CVE-2020-7660",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-502",
      ],
      github_reviewed: true,
      github_reviewed_at: "2020-08-11T14:14:51Z",
      nvd_published_at: null,
      severity: "HIGH",
   },
   details: "serialize-javascript prior to 3.1.0 allows remote attackers to inject arbitrary code via the function \"deleteFunctions\" within \"index.js\". \n\nAn object such as `{\"foo\": /1\"/, \"bar\": \"a\\\"@__R-<UID>-0__@\"}` was serialized as `{\"foo\": /1\"/, \"bar\": \"a\\/1\"/}`, which allows an attacker to escape the `bar` key. This requires the attacker to control the values of both `foo` and `bar` and guess the value of `<UID>`. The UID has a keyspace of approximately 4 billion making it a realistic network attack.",
   id: "GHSA-hxcc-f52p-wc94",
   modified: "2021-09-23T18:50:59Z",
   published: "2020-08-11T17:21:13Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2020-7660",
      },
      {
         type: "WEB",
         url: "https://github.com/yahoo/serialize-javascript/commit/f21a6fb3ace2353413761e79717b2d210ba6ccbd",
      },
      {
         type: "PACKAGE",
         url: "https://github.com/yahoo/serialize-javascript",
      },
   ],
   schema_version: "1.4.0",
   severity: [
      {
         score: "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
         type: "CVSS_V3",
      },
   ],
   summary: "Insecure serialization leading to RCE in serialize-javascript",
}


Log in or create an account to share your comment.

Security Advisory comment format.

This schema specifies the format of a comment related to a security advisory.

UUIDv4 of the comment
UUIDv4 of the Vulnerability-Lookup instance
When the comment was created originally
When the comment was last updated
Title of the comment
Description of the comment
The identifier of the vulnerability (CVE ID, GHSA-ID, PYSEC ID, etc.).



Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.