cyrus-imapd: Integer overflow in range checks
Published Dec 3, 2015
7.5
HIGHCVSS 2.0
EPSS 3.26%
Description
Integer overflow in the index_urlfetch function in imap/index.c in Cyrus IMAP 2.3.19, 2.4.18, and 2.5.6 allows remote attackers to have unspecified impact via vectors related to urlfetch range checks and the start_octet variable. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-8076.
Affected products
No data.
Configuration 1
- 2.3.0
- 2.3.1
- 2.3.2
- 2.3.3
- 2.3.4
- 2.3.5
- 2.3.6
- 2.3.7
- 2.3.8
- 2.3.9
- 2.3.10
- 2.3.11
- 2.3.12
- 2.3.13
- 2.3.14
- 2.3.15
- 2.3.16
- 2.3.17
- 2.3.18
- 2.4.0
- 2.4.1
- 2.4.2
- 2.4.3
- 2.4.4
- 2.4.5
- 2.4.6
- 2.4.7
- 2.4.8
- 2.4.9
- 2.4.10
- 2.4.11
- 2.4.12
- 2.4.13
- 2.4.14
- 2.4.15
- 2.4.16
- 2.4.17
- 2.5.0
- 2.5.1
- 2.5.2
- 2.5.3
No data.
Red Hat Enterprise Linux 5
cyrus-imapd
Not affected
Red Hat Enterprise Linux 6
cyrus-imapd
Not affected
Red Hat Enterprise Linux 7
cyrus-imapd
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | cyrus-imapd | Not affected | n/a |
| Red Hat Enterprise Linux 6 | cyrus-imapd | Not affected | n/a |
| Red Hat Enterprise Linux 7 | cyrus-imapd | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the versions of cyrus-imapd as shipped with Red Hat Enterprise Linux 5, 6 and 7, as they did not include the patch to fix CVE-2015-8076, which introduced the CVE-2015-8077 issue.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:P/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 2, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 3.26% (0.03261) | 87.97th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.23% (0.03233) | 86.60th | v5 (v2026.06.15) |
| Mar 30, 2025 | 3.45% (0.03449) | 86.41th | v4 (v2025.03.14) |
| Mar 29, 2025 | 7.31% (0.07310) | 85.82th | v4 (v2025.03.14) |
| Mar 19, 2025 | 3.45% (0.03449) | 86.12th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.97% (0.01967) | 82.32th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.45% (0.01447) | 87.19th | v3 (v2023.03.01) |
| Mar 4, 2024 | 1.45% (0.01447) | 86.28th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.95% (0.01950) | 86.84th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
References (14)
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00066.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00000.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2015-11/msg00156.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00015.html vendor-advisoryx_refsource_SUSE
- http://www.openwall.com/lists/oss-security/2015/09/30/3 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2015/11/04/3 mailing-listx_refsource_MLIST
- http://www.securitytracker.com/id/1034282 vdb-entryx_refsource_SECTRACK
- https://access.redhat.com/security/cve/CVE-2015-8077 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1278374 Issue Tracking
- https://cyrus.foundation/cyrus-imapd/commit/?id=745e161c834f1eb6d62fc14477f51dae799e1e08 x_refsource_CONFIRM
- https://docs.cyrus.foundation/imap/release-notes/2.5/x/2.5.7.html x_refsource_CONFIRMVendor Advisory
- https://lists.andrew.cmu.edu/pipermail/cyrus-devel/2015-October/003534.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2015-8077
- https://www.cve.org/CVERecord?id=CVE-2015-8077
Change history (0)
No recorded changes yet.