ghsa-hxcc-f52p-wc94
Vulnerability from github
Published
2020-08-11 17:21
Modified
2021-09-23 18:50
Severity ?
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.
{ "affected": [ { "ecosystem_specific": { "affected_functions": [ "(serialize-javascript)" ] }, "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-\u003cUID\u003e-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 `\u003cUID\u003e`. 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" }
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Sightings
Author | Source | Type | Date |
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Nomenclature
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- 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.