libhttp/url.c in shellinabox through 2.20 has an implementation flaw in the HTTP request parsing logic
Published Mar 17, 2019
7.5
HIGHCVSS 3.0
EPSS 5.99%
Description
libhttp/url.c in shellinabox through 2.20 has an implementation flaw in the HTTP request parsing logic. By sending a crafted multipart/form-data HTTP request, an attacker could exploit this to force shellinaboxd into an infinite loop, exhausting available CPU resources and taking the service down.
Affected products
No data.
- ≤ 2.20
No data.
No Red Hat product state for this CVE.
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.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/A:C
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 | 5.99% (0.05986) | 93.10th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.99% (0.05986) | 92.35th | v5 (v2026.06.15) |
| Nov 21, 2025 | 0.91% (0.00913) | 75.15th | v4 (v2025.03.14) |
| Nov 18, 2025 | 3.93% (0.03927) | 87.18th | v4 (v2025.03.14) |
| Mar 30, 2025 | 0.67% (0.00672) | 69.01th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.67% (0.02666) | 76.28th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.33% (0.00333) | 71.45th | v3 (v2023.03.01) |
| Apr 14, 2024 | 0.33% (0.00333) | 70.82th | v3 (v2023.03.01) |
| Mar 28, 2024 | 0.47% (0.00469) | 75.08th | v3 (v2023.03.01) |
| Mar 10, 2024 | 0.94% (0.00940) | 82.66th | v3 (v2023.03.01) |
| Aug 13, 2023 | 1.02% (0.01022) | 81.91th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.07% (0.01073) | 81.98th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.04% (0.01040) | 28.32th | v1 |
| Jan 6, 2022 | 1.04% (0.01040) | 27.69th | v1 |
| Sep 1, 2021 | 1.04% (0.01040) | 64.49th | v1 |
| Apr 14, 2021 | 1.04% (0.01040) | 0.00th | v1 |
References (4)
- http://packetstormsecurity.com/files/149978/Shell-In-A-Box-2.2.0-Denial-Of-Service.html x_refsource_MISCExploitPatchThird Party AdvisoryVDB Entry
- http://seclists.org/fulldisclosure/2018/Oct/50 x_refsource_MISCExploitMailing ListPatchThird Party Advisory
- https://code.google.com/archive/p/shellinabox/issues x_refsource_CONFIRMThird Party Advisory
- https://github.com/shellinabox/shellinabox/commit/4f0ecc31ac6f985e0dd3f5a52cbfc0e9251f6361 x_refsource_CONFIRMPatchThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://packetstormsecurity.com/files/149978/Shell-In-A-Box-2.2.0-Denial-Of-Service.html | x_refsource_MISCExploitPatchThird Party AdvisoryVDB Entry | |
| http://seclists.org/fulldisclosure/2018/Oct/50 | x_refsource_MISCExploitMailing ListPatchThird Party Advisory | |
| https://code.google.com/archive/p/shellinabox/issues | x_refsource_CONFIRMThird Party Advisory | |
| https://github.com/shellinabox/shellinabox/commit/4f0ecc31ac6f985e0dd3f5a52cbfc0e9251f6361 | x_refsource_CONFIRMPatchThird Party Advisory |
Change history (0)
No recorded changes yet.