lynx: Use after free in HTML.c:HTML_put_string() can lead to memory disclosure
Published Nov 17, 2017
5.3
MEDIUMCVSS 3.0
EPSS 1.70%
Description
Lynx before 2.8.9dev.16 is vulnerable to a use after free in the HTML parser resulting in memory disclosure, because HTML_put_string() can append a chunk onto itself.
Affected products
No data.
- 2.8.9
No data.
Red Hat Enterprise Linux 5
lynx
Not affected
Red Hat Enterprise Linux 6
lynx
Not affected
Red Hat Enterprise Linux 7
lynx
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | lynx | Not affected | n/a |
| Red Hat Enterprise Linux 6 | lynx | Not affected | n/a |
| Red Hat Enterprise Linux 7 | lynx | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of lynx as shipped with Red Hat Enterprise Linux 5 and 6. This issue affects the versions of lynx as shipped with Red Hat Enterprise Linux 7. Red Hat Product Security has rated this issue as having Low security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
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:L/I:N/A:N
AV:N/AC:L/Au:N/C:P/I:N/A:N
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 v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (8 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.70% (0.01705) | 76.43th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.70% (0.01705) | 76.24th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.16% (0.00159) | 52.83th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.16% (0.00164) | 51.28th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | 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 | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.04% (0.01040) | 0.00th | v1 |
References (8)
- http://lynx.invisible-island.net/current/CHANGES.html x_refsource_CONFIRMRelease NotesVendor Advisory
- http://www.securityfocus.com/bid/102180 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2017-1000211 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1522617 Issue Tracking
- https://github.com/ThomasDickey/lynx-snapshots/commit/280a61b300a1614f6037efc0902ff7ecf17146e9 x_refsource_MISCRelease NotesThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2017/11/msg00021.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2017-1000211
- https://www.cve.org/CVERecord?id=CVE-2017-1000211
| Link | Providers | Tags |
|---|---|---|
| http://lynx.invisible-island.net/current/CHANGES.html | x_refsource_CONFIRMRelease NotesVendor Advisory | |
| http://www.securityfocus.com/bid/102180 | vdb-entryx_refsource_BID | |
| https://access.redhat.com/security/cve/CVE-2017-1000211 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1522617 | Issue Tracking | |
| https://github.com/ThomasDickey/lynx-snapshots/commit/280a61b300a1614f6037efc0902ff7ecf17146e9 | x_refsource_MISCRelease NotesThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2017/11/msg00021.html | mailing-listx_refsource_MLIST | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-1000211 | ||
| https://www.cve.org/CVERecord?id=CVE-2017-1000211 |
Change history (0)
No recorded changes yet.