In Libav through 11.11 and 12.x through 12.1, the smacker_decode_tree function in libavcodec/smacker.c does not properly restrict tree recursion, which allows remote attackers to cause a denial of service (bitstream.c:build_table() out-of-bounds read and application crash) via a crafted Smacker stream
Published Nov 13, 2017
7.5
HIGHCVSS 3.0
EPSS 3.01%
Description
In Libav through 11.11 and 12.x through 12.1, the smacker_decode_tree function in libavcodec/smacker.c does not properly restrict tree recursion, which allows remote attackers to cause a denial of service (bitstream.c:build_table() out-of-bounds read and application crash) via a crafted Smacker stream.
Affected products
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: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 v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.01% (0.03010) | 86.94th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.01% (0.03010) | 85.62th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.68% (0.00676) | 69.79th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.74% (0.00737) | 81.49th | v3 (v2023.03.01) |
| Feb 29, 2024 | 0.74% (0.00737) | 80.31th | v3 (v2023.03.01) |
| Jul 8, 2023 | 0.74% (0.00737) | 78.30th | v3 (v2023.03.01) |
| May 16, 2023 | 0.98% (0.00981) | 81.22th | v3 (v2023.03.01) |
| May 8, 2023 | 1.02% (0.01021) | 81.55th | v3 (v2023.03.01) |
| Apr 6, 2023 | 1.00% (0.01000) | 81.36th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.85% (0.00854) | 79.69th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.94% (0.01943) | 48.45th | v1 |
| Jan 6, 2022 | 1.94% (0.01943) | 47.92th | v1 |
| Sep 1, 2021 | 1.94% (0.01943) | 76.51th | v1 |
| Apr 14, 2021 | 1.94% (0.01943) | 0.00th | v1 |
References (5)
- http://www.securityfocus.com/bid/101882 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://bugzilla.libav.org/show_bug.cgi?id=1098 x_refsource_CONFIRMIssue Tracking
- https://github.com/libav/libav/commit/cd4663dc80323ba64989d0c103d51ad3ee0e9c2f x_refsource_CONFIRMIssue Tracking
- https://security.gentoo.org/glsa/201811-19 vendor-advisoryx_refsource_GENTOO
- https://www.debian.org/security/2018/dsa-4119 vendor-advisoryx_refsource_DEBIAN
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/101882 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://bugzilla.libav.org/show_bug.cgi?id=1098 | x_refsource_CONFIRMIssue Tracking | |
| https://github.com/libav/libav/commit/cd4663dc80323ba64989d0c103d51ad3ee0e9c2f | x_refsource_CONFIRMIssue Tracking | |
| https://security.gentoo.org/glsa/201811-19 | vendor-advisoryx_refsource_GENTOO | |
| https://www.debian.org/security/2018/dsa-4119 | vendor-advisoryx_refsource_DEBIAN |
Change history (0)
No recorded changes yet.