CVE-2021-20247
CVSS V2 Medium 5.8
CVSS V3 High 7.4
Description
A flaw was found in mbsync before v1.3.5 and v1.4.1. Validations of the mailbox names returned by IMAP LIST/LSUB do not occur allowing a malicious or compromised server to use specially crafted mailbox names containing '..' path components to access data outside the designated mailbox on the opposite end of the synchronization channel. The highest threat from this vulnerability is to data confidentiality and integrity.
Overview
- CVE ID
- CVE-2021-20247
- Assigner
- secalert@redhat.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-02-23T19:15:13
- Last Modified Date
- 2023-02-02T17:10:29
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:mbsync_project:mbsync:*:*:*:*:*:*:*:* | 1 | OR | 1.3.5 | |
| cpe:2.3:a:mbsync_project:mbsync:*:*:*:*:*:*:*:* | 1 | OR | 1.4.0 | 1.4.1 |
| cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:8.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:P/I:P/A:N
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 5.8
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 4.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- HIGH
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- NONE
- Base Score
- 7.4
- Base Severity
- HIGH
- Exploitability Score
- 2.2
- Impact Score
- 5.2
References
| Reference URL | Reference Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1928963 | Issue Tracking Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/07/msg00001.html | Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CAXQLCK35QGRCRENRTGKJO4VVZGUXUJJ/ | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GVDEBZQJMWDW5JFK4NTHH6DAFNAZTESW/ | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202208-15 | |
| https://www.openwall.com/lists/oss-security/2021/02/22/1 | Exploit Mailing List Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-20247 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20247 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:19:54 | Added to TrackCVE | |||
| 2022-12-05 22:39:54 | 2021-02-23T19:15Z | 2021-02-23T19:15:13 | CVE Published Date | updated |
| 2022-12-05 22:39:54 | 2022-08-11T01:15:07 | CVE Modified Date | updated | |
| 2022-12-05 22:39:54 | Modified | Vulnerability Status | updated | |
| 2022-12-05 22:39:59 | References | updated | ||
| 2022-12-12 20:12:07 | Modified | Undergoing Analysis | Vulnerability Status | updated |
| 2023-02-02 17:11:24 | 2023-02-02T17:10:29 | CVE Modified Date | updated | |
| 2023-02-02 17:11:24 | Undergoing Analysis | Analyzed | Vulnerability Status | updated |
| 2023-02-02 17:11:25 | Weakness Enumeration | update |