CVE-2022-3786: Openssl src X.509 Email Address Variable Length Vulnerability

HIGH
Advisory Identifier: GHSA-h8jm-2x53-xhp5
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CVSS 7.5
CWE-120
Published
Advisory Summary

CVE-2022-3786 is a HIGH (CVSS 7.5) x.509 email address variable length vulnerability (CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')) affecting Openssl src libraries in the crates.io ecosystem. The issue involves x.509 email address variable length buffer overflow. Remediation is available by upgrading affected packages to version 300.0.11.

CVE-2022-3786 at a Glance

CVE Identifier CVE-2022-3786
GHSA Identifier GHSA-h8jm-2x53-xhp5
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Affected Product Openssl src
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2022-3786

To remediate this vulnerability, upgrade all affected Openssl src dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

openssl-src fixed: 300.0.11 
Upgrade openssl-src to 300.0.11
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for openssl-src

How to Check if You Are Affected

To determine whether your application is affected by CVE-2022-3786, inspect your project dependencies for Openssl src:

inspect dependencies for openssl-src

Analyze the terminal output to locate any version of Openssl src in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 300.0.11), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'), where the product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer. In Openssl src, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

A buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking. Note that this occurs after certificate chain signature verification and requires either a CA to have signed a malicious certificate or for an application to continue certificate verification despite failure to construct a path to a trusted issuer. An attacker can craft a malicious email address in a certificate to overflow an arbitrary number of bytes containing the `.` character (decimal 46) on the stack. This buffer overflow could result in a crash (causing a denial of service). In a TLS client, this can be triggered by connecting to a malicious server. In a TLS server, this can be triggered if the server requests client authentication and a malicious client connects.

CVE-2022-3786 Affected Openssl src Versions

1 component(s)
Fixed Versions:
300.0.11
Product / Package Ecosystem Affected Versions Fixed Version
openssl-src
 crates.io
≥ 300.0.0
< 300.0.11
300.0.11

References

NVD — CVE-2022-3786 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-3786
Openssl src Source Repository REPOSITORY
https://github.com/rustsec/advisory-db/pull/1452
Security Fix Commit FIX COMMIT
https://github.com/alexcrichton/openssl-src-rs/commit/4a31c14f31e1a08c18893a37e304dd1dd4b7daa3
Openssl src Security Information SECURITY
https://security.netapp.com/advisory/ntap-20221102-0001
Security Fix Commit FIX COMMIT
https://github.com/openssl/openssl/commit/fe3b639dc19b325846f4f6801f2f4604f56e3de3
www.openssl.org/news/secadv/2022110... WEB
https://www.openssl.org/news/secadv/20221101.txt
www.kb.cert.org/vuls/id/794340 WEB
https://www.kb.cert.org/vuls/id/794340
Openssl src Security Information SECURITY
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-openssl-W9sdCc2a
Openssl src Security Information SECURITY
https://security.gentoo.org/glsa/202211-01
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2022-0065.html
psirt.global.sonicwall.com/vuln-detail/snwlid-... WEB
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0023
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DWP23EZYOBDJQP7HP4YU7W2ABU2YDITS
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/63YRPWPUSX3MBHNPIEJZDKQT6YA7UF6S
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DWP23EZYOBDJQP7HP4YU7W2ABU2YDITS
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/63YRPWPUSX3MBHNPIEJZDKQT6YA7UF6S
Openssl src Source Repository REPOSITORY
https://github.com/alexcrichton/openssl-src-rs
git.openssl.org/gitweb/ WEB
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=c42165b5706e42f67ef8ef4c351a9a4c5d21639a
git.openssl.org/gitweb/ WEB
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=c42165b5706e42f67ef8ef4c351a9a4c5d21639a
Openssl src Security Information SECURITY
http://packetstormsecurity.com/files/169687/OpenSSL-Security-Advisory-20221101.html
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/01/15
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/01/16
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/01/17
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/01/18
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/01/19
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/01/20
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/01/21
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/01/24
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/02/1
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/02/10
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/02/11
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/02/12
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/02/13
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/02/14
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/02/15
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/02/2
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/02/3
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/02/5
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/02/6
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/02/7
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/02/9
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/03/1
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/03/10
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/03/11
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/03/2
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/03/3
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/03/5
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/03/6
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/03/7
Openssl src Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/11/03/9

Frequently Asked Questions

What is CVE-2022-3786?
CVE-2022-3786 is a security vulnerability in Openssl src involving X.509 Email Address Variable Length Buffer Overflow under CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow').
Which Openssl src versions are affected?
Affected versions include releases prior to 300.0.11 across affected packages: openssl-src.
What version fixes CVE-2022-3786?
Upgrading to 300.0.11 (or the latest patched release for your respective branch) resolves the vulnerability.
Is openssl-src affected?
Yes, openssl-src is affected in releases prior to 300.0.11. Upgrade your dependency to 300.0.11 or later.
What is the CVSS score of CVE-2022-3786?
CVE-2022-3786 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2022-3786?
CVE-2022-3786 is classified under CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') (The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.).
How can I check crates.io dependencies for CVE-2022-3786?
Run the dependency tree command: 'inspect dependencies for openssl-src'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-h8jm-2x53-xhp5",
  "modified" : "2022-11-02T21:46:40Z",
  "published" : "2022-11-01T17:45:21Z",
  "aliases" : [ "CVE-2022-3786" ],
  "summary" : "X.509 Email Address Variable Length Buffer Overflow",
  "details" : "A buffer overrun can be triggered in X.509 certificate verification,\nspecifically in name constraint checking. Note that this occurs after\ncertificate chain signature verification and requires either a CA to\nhave signed a malicious certificate or for an application to continue\ncertificate verification despite failure to construct a path to a trusted\nissuer. An attacker can craft a malicious email address in a certificate\nto overflow an arbitrary number of bytes containing the `.` character\n(decimal 46) on the stack. This buffer overflow could result in a crash\n(causing a denial of service).\n\nIn a TLS client, this can be triggered by connecting to a malicious\nserver. In a TLS server, this can be triggered if the server requests\nclient authentication and a malicious client connects.\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
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    },
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      "type" : "ECOSYSTEM",
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      }, {
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  } ],
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  }, {
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  "database_specific" : {
    "cwe_ids" : [ "CWE-120" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-11-01T17:45:21Z",
    "nvd_published_at" : "2022-11-01T18:15:00Z"
  }
}