tidy: heap buffer overflow in ParseValue()
Published Aug 11, 2015
4.3
MEDIUMCVSS 2.0
EPSS 3.84%
Description
The ParseValue function in lexer.c in tidy before 4.9.31 allows remote attackers to cause a denial of service (crash) via vectors involving multiple whitespace characters before an empty href, which triggers a large memory allocation.
Affected products
No data.
Configuration 1
- 12.04
- 14.04
- 15.04
Configuration 2
- 7.0
- 8.0
No data.
Red Hat Enterprise Linux 6
tidy
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | tidy | 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.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/I:N/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
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.84% (0.03842) | 89.79th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.84% (0.03842) | 88.72th | v5 (v2026.06.15) |
| Jun 8, 2025 | 4.27% (0.04271) | 88.26th | v4 (v2025.03.14) |
| May 25, 2025 | 5.30% (0.05301) | 89.50th | v4 (v2025.03.14) |
| Mar 17, 2025 | 9.69% (0.09685) | 92.33th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.99% (0.01990) | 89.29th | v3 (v2023.03.01) |
| May 31, 2024 | 1.99% (0.01990) | 88.79th | v3 (v2023.03.01) |
| May 22, 2024 | 1.54% (0.01536) | 87.10th | v3 (v2023.03.01) |
| Mar 29, 2023 | 1.54% (0.01536) | 85.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.34% (0.01344) | 84.00th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.41% (0.03407) | 84.65th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.41% (0.03407) | 83.10th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.41% (0.03407) | 66.20th | v2 (v2022.01.01) |
References (18)
- http://lists.apple.com/archives/security-announce/2015/Sep/msg00001.html vendor-advisoryx_refsource_APPLEMailing ListThird Party Advisory
- http://lists.apple.com/archives/security-announce/2015/Sep/msg00005.html vendor-advisoryx_refsource_APPLEMailing ListThird Party Advisory
- http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html vendor-advisoryx_refsource_APPLEMailing ListThird Party Advisory
- http://www.debian.org/security/2015/dsa-3309 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.openwall.com/lists/oss-security/2015/06/04/2 mailing-listx_refsource_MLISTExploit
- http://www.openwall.com/lists/oss-security/2015/07/13/7 mailing-listx_refsource_MLISTExploit
- http://www.openwall.com/lists/oss-security/2015/07/15/3 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/75037 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1033703 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-2695-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2015-5523 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1228297 Issue Tracking
- https://github.com/htacg/tidy-html5/issues/217#issuecomment-108565501 x_refsource_CONFIRMExploit
- https://nvd.nist.gov/vuln/detail/CVE-2015-5523
- https://support.apple.com/HT205212 x_refsource_CONFIRMThird Party Advisory
- https://support.apple.com/HT205213 x_refsource_CONFIRMThird Party Advisory
- https://support.apple.com/HT205267 x_refsource_CONFIRMThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2015-5523
Change history (0)
No recorded changes yet.