curl: Out-of-bound access in SSL related cleanup code
Published Nov 29, 2017
9.8
CRITICALCVSS 3.0
EPSS 3.84%
Description
curl and libcurl before 7.57.0 on 32-bit platforms allow attackers to cause a denial of service (out-of-bounds access and application crash) or possibly have unspecified other impact because too little memory is allocated for interfacing to an SSL library.
Affected products
- Vendor n/a Product Curl and Libcurl Before 7.57.0 Defaultn/a
- Version curl and libcurl before 7.57.0StatusaffectedConstraints-
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Curl and Libcurl Before 7.57.0 | n/a |
|
No data.
.NET Core 1.0 on Red Hat Enterprise Linux
rh-dotnetcore10-curl
Not affected
.NET Core 1.1 on Red Hat Enterprise Linux
rh-dotnetcore11-curl
Not affected
.NET Core 2.0 on Red Hat Enterprise Linux
rh-dotnet20-curl
Not affected
Red Hat Ceph Storage 2
curl
Not affected
Red Hat Enterprise Linux 5
curl
Not affected
Red Hat Enterprise Linux 6
curl
Not affected
Red Hat Enterprise Linux 7
curl
Not affected
Red Hat Enterprise Linux 8
curl
Not affected
Red Hat Software Collections
httpd24-curl
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| .NET Core 1.0 on Red Hat Enterprise Linux | rh-dotnetcore10-curl | Not affected | n/a |
| .NET Core 1.1 on Red Hat Enterprise Linux | rh-dotnetcore11-curl | Not affected | n/a |
| .NET Core 2.0 on Red Hat Enterprise Linux | rh-dotnet20-curl | Not affected | n/a |
| Red Hat Ceph Storage 2 | curl | Not affected | n/a |
| Red Hat Enterprise Linux 5 | curl | Not affected | n/a |
| Red Hat Enterprise Linux 6 | curl | Not affected | n/a |
| Red Hat Enterprise Linux 7 | curl | Not affected | n/a |
| Red Hat Enterprise Linux 8 | curl | Not affected | n/a |
| Red Hat Software Collections | httpd24-curl | Not affected | 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.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:H
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 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Table of values (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.84% (0.03839) | 89.78th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.00% (0.03995) | 89.15th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.65% (0.00654) | 79.72th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.65% (0.00654) | 78.81th | v3 (v2023.03.01) |
| Jul 19, 2023 | 0.65% (0.00654) | 76.76th | v3 (v2023.03.01) |
| Jun 1, 2023 | 0.78% (0.00778) | 78.87th | v3 (v2023.03.01) |
| Apr 22, 2023 | 0.73% (0.00725) | 77.86th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.84% (0.00839) | 79.48th | 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 | 1.55% (0.01550) | 33.66th | v1 |
| Jan 6, 2022 | 1.55% (0.01550) | 32.96th | v1 |
| Sep 1, 2021 | 1.55% (0.01550) | 73.01th | v1 |
| Apr 14, 2021 | 1.55% (0.01550) | 0.00th | v1 |
References (9)
- http://security.cucumberlinux.com/security/details.php?id=163 x_refsource_CONFIRMThird Party Advisory
- http://www.securityfocus.com/bid/102014 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039898 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2017-8818 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1517691 Issue Tracking
- https://curl.haxx.se/docs/adv_2017-af0a.html x_refsource_CONFIRMPatchVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-8818
- https://security.gentoo.org/glsa/201712-04 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2017-8818
| Link | Providers | Tags |
|---|---|---|
| http://security.cucumberlinux.com/security/details.php?id=163 | x_refsource_CONFIRMThird Party Advisory | |
| http://www.securityfocus.com/bid/102014 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1039898 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2017-8818 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1517691 | Issue Tracking | |
| https://curl.haxx.se/docs/adv_2017-af0a.html | x_refsource_CONFIRMPatchVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-8818 | ||
| https://security.gentoo.org/glsa/201712-04 | vendor-advisoryx_refsource_GENTOOThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2017-8818 |
Change history (0)
No recorded changes yet.