dovecot: Auth leaks memory if SASL authentication is aborted
Published Jan 25, 2018
7.5
HIGHCVSS 3.0
EPSS 3.12%
Description
A flaw was found in dovecot 2.0 up to 2.2.33 and 2.3.0. An abort of SASL authentication results in a memory leak in dovecot's auth client used by login processes. The leak has impact in high performance configuration where same login processes are reused and can cause the process to crash due to memory exhaustion.
Affected products
-
- Version 2.0 up to 2.2.33 and 2.3.0StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| The Dovecot Project | Dovecot | n/a |
|
Configuration 1
Configuration 2
- 7.0
- 8.0
- 9.0
Configuration 3
- 12.04
- 14.04
- 16.04
- 17.10
No data.
Red Hat Enterprise Linux 5
dovecot
Not affected
Red Hat Enterprise Linux 6
dovecot
Affected
Red Hat Enterprise Linux 7
dovecot
Affected
Red Hat Enterprise Linux 8
dovecot
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | dovecot | Not affected | n/a |
| Red Hat Enterprise Linux 6 | dovecot | Affected | n/a |
| Red Hat Enterprise Linux 7 | dovecot | Affected | n/a |
| Red Hat Enterprise Linux 8 | dovecot | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat mitigation
This issue can be mitigated on vulnerable systems by limiting the login process to a single request per process, which is also the default value.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (20 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 3.12% (0.03120) | 87.40th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.18% (0.03180) | 86.36th | v5 (v2026.06.15) |
| May 28, 2026 | 2.77% (0.02771) | 86.26th | v4 (v2025.03.14) |
| Mar 12, 2026 | 4.61% (0.04609) | 89.09th | v4 (v2025.03.14) |
| Mar 11, 2026 | 2.77% (0.02771) | 85.84th | v4 (v2025.03.14) |
| Jun 30, 2025 | 1.46% (0.01457) | 79.89th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.76% (0.02755) | 85.04th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.88% (0.00884) | 82.72th | v3 (v2023.03.01) |
| Apr 10, 2024 | 0.88% (0.00884) | 82.27th | v3 (v2023.03.01) |
| Jun 18, 2023 | 0.88% (0.00884) | 80.25th | v3 (v2023.03.01) |
| May 8, 2023 | 1.24% (0.01240) | 83.40th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.06% (0.02057) | 87.22th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.66% (0.01659) | 34.20th | v1 |
| Jan 6, 2022 | 1.66% (0.01659) | 33.50th | v1 |
| Sep 1, 2021 | 1.66% (0.01659) | 73.96th | v1 |
| Apr 14, 2021 | 1.66% (0.01659) | 0.00th | v1 |
References (10)
- https://access.redhat.com/security/cve/CVE-2017-15132 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1532768 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://github.com/dovecot/core/commit/1a29ed2f96da1be22fa5a4d96c7583aa81b8b060.patch x_refsource_CONFIRMPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/03/msg00036.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-15132
- https://usn.ubuntu.com/3556-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3556-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2017-15132
- https://www.debian.org/security/2018/dsa-4130 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.dovecot.org/list/dovecot-news/2018-February/000370.html mailing-listx_refsource_MLISTVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2017-15132 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1532768 | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| https://github.com/dovecot/core/commit/1a29ed2f96da1be22fa5a4d96c7583aa81b8b060.patch | x_refsource_CONFIRMPatchThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2018/03/msg00036.html | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-15132 | ||
| https://usn.ubuntu.com/3556-1/ | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://usn.ubuntu.com/3556-2/ | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2017-15132 | ||
| https://www.debian.org/security/2018/dsa-4130 | vendor-advisoryx_refsource_DEBIANThird Party Advisory | |
| https://www.dovecot.org/list/dovecot-news/2018-February/000370.html | mailing-listx_refsource_MLISTVendor Advisory |
Change history (0)
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