HIGH
In Libav through 12.2, there is an invalid memcpy in the av_packet_ref function of libavcodec/avpacket.c
Published Jan 18, 2018
8.8
HIGHCVSS 3.0
EPSS 2.47%
Description
In Libav through 12.2, there is an invalid memcpy in the av_packet_ref function of libavcodec/avpacket.c. Remote attackers could leverage this vulnerability to cause a denial of service (segmentation fault) via a crafted avi file.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
8.8 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
6.8 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.47% 0.02474
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.02474
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 (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 2.47% (0.02474) | 83.98th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.52% (0.02521) | 82.74th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.78% (0.00777) | 81.55th | v3 (v2023.03.01) |
| Mar 5, 2024 | 0.78% (0.00777) | 80.88th | v3 (v2023.03.01) |
| Jun 11, 2023 | 0.78% (0.00777) | 78.88th | v3 (v2023.03.01) |
| May 8, 2023 | 0.79% (0.00790) | 78.98th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.55% (0.00553) | 74.06th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.14% (0.01136) | 59.45th | v2 (v2022.01.01) |
| Oct 18, 2022 | 1.14% (0.01136) | 58.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.14% (0.01136) | 56.27th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.14% (0.01136) | 34.23th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.30% (0.01300) | 31.12th | v1 |
| Jan 6, 2022 | 1.30% (0.01300) | 30.48th | v1 |
| Sep 1, 2021 | 1.30% (0.01300) | 69.44th | v1 |
| Apr 14, 2021 | 1.30% (0.01300) | 0.00th | v1 |
Weaknesses (1)
References (3)
- http://www.securityfocus.com/bid/102793 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://bugzilla.libav.org/show_bug.cgi?id=1112 x_refsource_MISCExploitIssue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/09/msg00000.html mailing-listx_refsource_MLIST
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/102793 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://bugzilla.libav.org/show_bug.cgi?id=1112 | x_refsource_MISCExploitIssue TrackingThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2019/09/msg00000.html | mailing-listx_refsource_MLIST |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jan 18, 2018
Updated Aug 5, 2024
Reserved Jan 18, 2018
Link CVE-2018-5766
CISA Vulnrichment
Updated n/a