CVE-2015-8791
The EbmlElement::ReadCodedSizeValue function in libEBML before 1.3.3 allows context-dependent...
The EbmlElement::ReadCodedSizeValue function in libEBML before 1.3.3 allows context-dependent attackers to obtain sensitive information from process heap memory via a crafted length value in an EBML id, which triggers an invalid memory access.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
The EbmlElement::ReadCodedSizeValue function in libEBML before 1.3.3 allows context-dependent attackers to obtain sensitive information from process heap memory via a crafted length value in an EBML id, which triggers an invalid memory access.
- Record
CVE-2015-8791- CVSS 3.0
- 4.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:P/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
CVE List No score
The EbmlElement::ReadCodedSizeValue function in libEBML before 1.3.3 allows context-dependent attackers to obtain sensitive information from process heap memory via a crafted length value in an EBML id, which triggers an invalid memory access.
- Record
CVE-2015-8791- Updated
- 2026-11-02
EUVDEUVD-2015-8663 No score
The EbmlElement::ReadCodedSizeValue function in libEBML before 1.3.3 allows context-dependent attackers to obtain sensitive information from process heap memory via a crafted length value in an EBML id, which triggers an invalid memory access.
- Record
EUVD-2015-8663- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-wrxq-929q-rj83
The EbmlElement::ReadCodedSizeValue function in libEBML before 1.3.3 allows context-dependent...
The EbmlElement::ReadCodedSizeValue function in libEBML before 1.3.3 allows context-dependent attackers to obtain sensitive information from process heap memory via a crafted length value in an EBML id, which triggers an invalid memory access.
- Record
GHSA-wrxq-929q-rj83- CVSS 3.0
- 4.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
OSV
The EbmlElement::ReadCodedSizeValue function in libEBML before 1.3.3 allows context-dependent attackers to obtain sensitive information from process heap memory via a crafted length value in an EBML id, which triggers an invalid memory access.
- Record
CVE-2015-8791- CVSS 3.0
- 4.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2015-8791
The EbmlElement::ReadCodedSizeValue function in libEBML before 1.3.3 allows context-dependent attackers to obtain sensitive information from process heap memory via a crafted length value in an EBML id, which triggers an invalid memory access.
- Record
DEBIAN-CVE-2015-8791- CVSS 3.0
- 4.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2015-8791
The EbmlElement::ReadCodedSizeValue function in libEBML before 1.3.3 allows context-dependent attackers to obtain sensitive information from process heap memory via a crafted length value in an EBML id, which triggers an invalid memory access.
- Record
UBUNTU-CVE-2015-8791- CVSS 3.0
- 4.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
libebmlDebian:12 |
before 1.3.3-1 | 1.3.3-1 |
libebmlDebian:13 |
before 1.3.3-1 | 1.3.3-1 |
libebmlDebian:14 |
before 1.3.3-1 | 1.3.3-1 |
libebmlDebian:6.0 From an advisory covering 2 CVEs |
before 0.7.7-3.1+deb6u1, plus listed versions 0.7.7-3.1 |
0.7.7-3.1+deb6u1 |
libebmlDebian:7 From an advisory covering 3 CVEs |
before 1.2.2-2+deb7u1, plus listed versions 1.2.2-2 |
1.2.2-2+deb7u1 |
libebmlDebian:8 From an advisory covering 3 CVEs |
before 1.3.0-2+deb8u1, plus listed versions 1.3.0-2 |
1.3.0-2+deb8u1 |
libebmlUbuntu:14.04:LTS |
before 1.3.0-2+deb8u1build0.14.04.1, plus listed versions 1.2.2-21.3.0-2 |
1.3.0-2+deb8u1build0.14.04.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2015-8791 is a medium vulnerability (CVSS 4.3) in Matroska Libebml, published January 29, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.34%, the 71st percentile. Fixed in libebml 1.3.3-1.
References
debian.org/security/2016/dsa-3538
github.com/Matroska-Org/libebml/commit/24e5cd7c666b1ddd85619d60486db0a5481c1b90
lists.opensuse.org/opensuse-updates/2016-01/msg00035.html
lists.matroska.org/pipermail/matroska-users/2015-October/006985.html
nvd.nist.gov/vuln/detail/CVE-2015-8791