HIGH
rdesktop: Denial of Service in sec_parse_crypt_info and sec_recv
Published Mar 15, 2019
7.5
HIGHCVSS 3.0
EPSS 3.60%
Description
rdesktop versions up to and including v1.8.3 contain several Out-Of- Bounds Reads in the file secure.c that result in a Denial of Service (segfault).
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
rdesktop
Will not fix
Red Hat Enterprise Linux 6
rdesktop
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | rdesktop | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | rdesktop | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.5 HIGH NVD
CVSS:3.0/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
1 other source (Red Hat) ▾
5.3 MEDIUM Red Hat
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction Required
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.
3.60% 0.03595
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.03595
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 (17 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.60% (0.03595) | 89.07th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.60% (0.03595) | 87.92th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.24% (0.01236) | 77.37th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.76% (0.02758) | 76.67th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.24% (0.01236) | 77.83th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.66% (0.00661) | 80.33th | v3 (v2023.03.01) |
| Mar 8, 2024 | 0.72% (0.00717) | 80.07th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.62% (0.00616) | 78.11th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.62% (0.00616) | 75.46th | 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 | 2.06% (0.02061) | 50.21th | v1 |
| Jan 6, 2022 | 2.06% (0.02061) | 49.70th | v1 |
| Sep 1, 2021 | 2.06% (0.02061) | 76.87th | v1 |
| Apr 14, 2021 | 2.06% (0.02061) | 0.00th | v1 |
Weaknesses (2)
References (11)
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00040.html vendor-advisoryx_refsource_SUSE
- http://www.securityfocus.com/bid/106938 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2018-20176 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1670401 Issue Tracking
- https://github.com/rdesktop/rdesktop/commit/4dca546d04321a610c1835010b5dad85163b65e1 x_refsource_MISCPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/02/msg00030.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2018-20176
- https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/ x_refsource_CONFIRMExploitThird Party Advisory
- https://security.gentoo.org/glsa/201903-06 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2018-20176
- https://www.debian.org/security/2019/dsa-4394 vendor-advisoryx_refsource_DEBIAN
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00040.html | vendor-advisoryx_refsource_SUSE | |
| http://www.securityfocus.com/bid/106938 | vdb-entryx_refsource_BID | |
| https://access.redhat.com/security/cve/CVE-2018-20176 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1670401 | Issue Tracking | |
| https://github.com/rdesktop/rdesktop/commit/4dca546d04321a610c1835010b5dad85163b65e1 | x_refsource_MISCPatchThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2019/02/msg00030.html | mailing-listx_refsource_MLIST | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-20176 | ||
| https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/ | x_refsource_CONFIRMExploitThird Party Advisory | |
| https://security.gentoo.org/glsa/201903-06 | vendor-advisoryx_refsource_GENTOO | |
| https://www.cve.org/CVERecord?id=CVE-2018-20176 | ||
| https://www.debian.org/security/2019/dsa-4394 | vendor-advisoryx_refsource_DEBIAN |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Mar 15, 2019
Updated Aug 5, 2024
Reserved Dec 17, 2018
Link CVE-2018-20176
CISA Vulnrichment
Updated n/a