CVE-2021-29157
Dovecot before 2.3.15 allows ../ Path Traversal. An attacker with access to the local filesystem can trick OAuth2 authentication into using an HS256 validation key from an attacker-controlled
02 Description
Dovecot before 2.3.15 allows ../ Path Traversal. An attacker with access to the local filesystem can trick OAuth2 authentication into using an HS256 validation key from an attacker-controlled
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.47% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 40.3% of scored records. A rank, not a probability.
- NVD base score
- 5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-06-28 11:58Z5 YR AGO
- Last updated
- 2024-08-03 22:02Z2 YR AGO
- Reserved
- 2021-03-25
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.5)
- CNA CVSS vector
- CVSS:3.1/AC:H/AV:L/A:N/C:H/I:H/PR:L/S:C/UI:N
- Weaknesses
- Data version
- 5.1
- Document digest
- bcdc259fee4490e579ccd6730e4a38627b33b8c21f56b6ff9ce05eeeb34f5cbb
05 Affected products
06 References
- dovecot.orghttps://dovecot.org/security
- www.openwall.comhttps://www.openwall.com/lists/oss-security/2021/06/28/1
- lists.fedoraproject.orgFEDORA-2021-208340a217https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JB2VTJ3G2ILYWH5Y2FTY2PUHT2MD6VMI/
- lists.fedoraproject.orgFEDORA-2021-891c1ab1achttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TK424DWFO2TKJYXZ2H3XL633TYJL4GQN/
- security.gentoo.orgGLSA-202107-41https://security.gentoo.org/glsa/202107-41
07 Fixed in
Arch Linux
- dovecot Fixed in 2.3.15-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 12
- dovecot Fixed in 1:2.3.13+dfsg1-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- dovecot Fixed in 1:2.3.13+dfsg1-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- dovecot Fixed in 1:2.3.13+dfsg1-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.