EncFS before 1.7.0 encrypts multiple blocks by means of the CFB cipher mode with the same initialization vector, which makes it easier for local users to obtain sensitive information via calculations involving recovery of XORed data, as demonstrated by an attack on encrypted data in which the last block contains only one byte
Published Sep 17, 2010
5.0
MEDIUMCVSS 2.0
EPSS 2.06%
Description
EncFS before 1.7.0 encrypts multiple blocks by means of the CFB cipher mode with the same initialization vector, which makes it easier for local users to obtain sensitive information via calculations involving recovery of XORed data, as demonstrated by an attack on encrypted data in which the last block contains only one byte.
Affected products
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: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
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.06% (0.02063) | 80.65th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.06% (0.02063) | 78.80th | v5 (v2026.06.15) |
| Mar 29, 2025 | 1.88% (0.01877) | 72.12th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.64% (0.00639) | 68.78th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.28% (0.01282) | 68.34th | v2 (v2022.01.01) |
| Feb 22, 2023 | 1.28% (0.01282) | 68.05th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.28% (0.01282) | 65.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.28% (0.01282) | 41.72th | v2 (v2022.01.01) |
References (12)
- http://archives.neohapsis.com/archives/fulldisclosure/2010-08/0316.html mailing-listx_refsource_FULLDISC
- http://lists.fedoraproject.org/pipermail/package-announce/2010-September/047794.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2010-September/047798.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2010-September/047825.html vendor-advisoryx_refsource_FEDORA
- http://secunia.com/advisories/41158 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/41478 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.arg0.net/encfs x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2010/09/05/3 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2010/09/06/1 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2010/09/07/8 mailing-listx_refsource_MLIST
- http://www.vupen.com/english/advisories/2010/2414 vdb-entryx_refsource_VUPENVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=630460 x_refsource_CONFIRM
Change history (0)
No recorded changes yet.