HIGH
php: NULL pointer dereference in ext/imap/php_imap.c resulting in a denial of service
Published Dec 7, 2018
7.5
HIGHCVSS 3.1
EPSS 6.28%
Description
ext/imap/php_imap.c in PHP 5.x and 7.x before 7.3.0 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an empty string in the message argument to the imap_mail function.
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
php
Not affected
Red Hat Enterprise Linux 5
php53
Not affected
Red Hat Enterprise Linux 6
php
Not affected
Red Hat Enterprise Linux 7
php
Not affected
Red Hat Enterprise Linux 8
php
Not affected
Red Hat Software Collections
rh-php70-php
Fix deferred
Red Hat Software Collections
rh-php71-php
Not affected
Red Hat Software Collections
rh-php72-php
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | php | Not affected | n/a |
| Red Hat Enterprise Linux 5 | php53 | Not affected | n/a |
| Red Hat Enterprise Linux 6 | php | Not affected | n/a |
| Red Hat Enterprise Linux 7 | php | Not affected | n/a |
| Red Hat Enterprise Linux 8 | php | Not affected | n/a |
| Red Hat Software Collections | rh-php70-php | Fix deferred | n/a |
| Red Hat Software Collections | rh-php71-php | Not affected | n/a |
| Red Hat Software Collections | rh-php72-php | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
7.5 HIGH NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
5.9 MEDIUM Red Hat
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
6.28% 0.06278
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.06278
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 (50 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.28% (0.06278) | 93.37th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.88% (0.06876) | 93.20th | v5 (v2026.06.15) |
| Mar 4, 2026 | 23.72% (0.23723) | 95.88th | v4 (v2025.03.14) |
| Mar 1, 2026 | 12.32% (0.12325) | 93.76th | v4 (v2025.03.14) |
| Feb 4, 2026 | 23.72% (0.23723) | 95.86th | v4 (v2025.03.14) |
| Feb 1, 2026 | 12.32% (0.12325) | 93.72th | v4 (v2025.03.14) |
| Jan 4, 2026 | 23.72% (0.23723) | 95.81th | v4 (v2025.03.14) |
| Jan 1, 2026 | 12.32% (0.12325) | 93.68th | v4 (v2025.03.14) |
| Dec 28, 2025 | 23.72% (0.23723) | 95.81th | v4 (v2025.03.14) |
| Dec 27, 2025 | 14.58% (0.14581) | 94.27th | v4 (v2025.03.14) |
| Dec 4, 2025 | 23.72% (0.23723) | 95.78th | v4 (v2025.03.14) |
| Dec 1, 2025 | 12.32% (0.12325) | 93.64th | v4 (v2025.03.14) |
| Nov 18, 2025 | 24.08% (0.24080) | 95.70th | v4 (v2025.03.14) |
| Nov 4, 2025 | 16.41% (0.16412) | 94.59th | v4 (v2025.03.14) |
| Nov 1, 2025 | 8.03% (0.08033) | 91.75th | v4 (v2025.03.14) |
| Oct 28, 2025 | 16.41% (0.16412) | 94.58th | v4 (v2025.03.14) |
| Oct 27, 2025 | 11.08% (0.11081) | 93.16th | v4 (v2025.03.14) |
| Oct 4, 2025 | 16.41% (0.16412) | 94.62th | v4 (v2025.03.14) |
| Oct 1, 2025 | 8.03% (0.08033) | 91.81th | v4 (v2025.03.14) |
| Sep 4, 2025 | 11.27% (0.11268) | 93.28th | v4 (v2025.03.14) |
| Sep 1, 2025 | 5.30% (0.05301) | 89.71th | v4 (v2025.03.14) |
| Aug 4, 2025 | 11.27% (0.11268) | 93.24th | v4 (v2025.03.14) |
| Aug 1, 2025 | 5.30% (0.05301) | 89.71th | v4 (v2025.03.14) |
| Jul 30, 2025 | 11.27% (0.11268) | 93.23th | v4 (v2025.03.14) |
| Jul 4, 2025 | 16.67% (0.16668) | 94.62th | v4 (v2025.03.14) |
| Jul 1, 2025 | 8.17% (0.08174) | 91.81th | v4 (v2025.03.14) |
| Jun 4, 2025 | 16.67% (0.16668) | 94.56th | v4 (v2025.03.14) |
| Jun 1, 2025 | 8.17% (0.08174) | 91.77th | v4 (v2025.03.14) |
| May 4, 2025 | 16.67% (0.16668) | 94.51th | v4 (v2025.03.14) |
| May 1, 2025 | 8.17% (0.08174) | 91.75th | v4 (v2025.03.14) |
| Apr 8, 2025 | 16.67% (0.16668) | 94.38th | v4 (v2025.03.14) |
| Mar 30, 2025 | 15.21% (0.15213) | 94.04th | v4 (v2025.03.14) |
| Mar 29, 2025 | 19.36% (0.19355) | 92.43th | v4 (v2025.03.14) |
| Mar 17, 2025 | 15.21% (0.15213) | 94.09th | v4 (v2025.03.14) |
| Mar 12, 2025 | 3.70% (0.03701) | 91.85th | v3 (v2023.03.01) |
| Dec 17, 2024 | 7.11% (0.07112) | 93.94th | v3 (v2023.03.01) |
| Jul 2, 2024 | 2.04% (0.02036) | 89.04th | v3 (v2023.03.01) |
| Jun 8, 2024 | 2.58% (0.02578) | 90.25th | v3 (v2023.03.01) |
| Apr 29, 2024 | 1.83% (0.01834) | 88.12th | v3 (v2023.03.01) |
| Dec 1, 2023 | 2.50% (0.02500) | 88.92th | v3 (v2023.03.01) |
| May 5, 2023 | 2.34% (0.02337) | 88.12th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.45% (0.02453) | 88.32th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.58% (0.02580) | 55.23th | v1 |
| Jan 6, 2022 | 2.58% (0.02580) | 54.78th | v1 |
| Sep 1, 2021 | 2.58% (0.02580) | 79.07th | v1 |
| Apr 14, 2021 | 2.58% (0.02580) | 0.00th | v1 |
Weaknesses (1)
References (11)
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00041.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00044.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/106143 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2018-19935 Vendor Advisory
- https://bugs.php.net/bug.php?id=77020 x_refsource_MISCIssue TrackingPatchVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1660525 Issue Tracking
- https://lists.debian.org/debian-lts-announce/2018/12/msg00006.html mailing-listx_refsource_MLISTThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-19935
- https://security.netapp.com/advisory/ntap-20181221-0003/ x_refsource_CONFIRMThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-19935
- https://www.debian.org/security/2018/dsa-4353 vendor-advisoryx_refsource_DEBIANThird Party Advisory
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Dec 7, 2018
Updated Aug 5, 2024
Reserved Dec 7, 2018
Link CVE-2018-19935
CISA Vulnrichment
Updated n/a