CVE-2018-12088
S3QL before 2.27 mishandles checksumming, and consequently allows replay attacks in which an...
S3QL before 2.27 mishandles checksumming, and consequently allows replay attacks in which an attacker who controls the backend can present old versions of the filesystem metadata database as up-to-date, temporarily inject zero-valued bytes into files, or temporarily hide parts of files. This is related to the checksum_basic_mapping function.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
S3QL before 2.27 mishandles checksumming, and consequently allows replay attacks in which an attacker who controls the backend can present old versions of the filesystem metadata database as up-to-date, temporarily inject zero-valued bytes into files, or temporarily hide parts of files. This is related to the checksum_basic_mapping function.
- Record
CVE-2018-12088- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:N - Weakness
- CWE-20
- Updated
- 2026-11-02
CVE List No score
S3QL before 2.27 mishandles checksumming, and consequently allows replay attacks in which an attacker who controls the backend can present old versions of the filesystem metadata database as up-to-date, temporarily inject zero-valued bytes into files, or temporarily hide parts of files. This is related to the checksum_basic_mapping function.
- Record
CVE-2018-12088- Updated
- 2026-11-02
EUVDEUVD-2018-4068 No score
S3QL before 2.27 mishandles checksumming, and consequently allows replay attacks in which an attacker who controls the backend can present old versions of the filesystem metadata database as up-to-date, temporarily inject zero-valued bytes into files, or temporarily hide parts of files. This is related to the checksum_basic_mapping function.
- Record
EUVD-2018-4068- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-49xr-rr65-3xpc
S3QL before 2.27 mishandles checksumming, and consequently allows replay attacks in which an...
S3QL before 2.27 mishandles checksumming, and consequently allows replay attacks in which an attacker who controls the backend can present old versions of the filesystem metadata database as up-to-date, temporarily inject zero-valued bytes into files, or temporarily hide parts of files. This is related to the checksum_basic_mapping function.
- Record
GHSA-49xr-rr65-3xpc- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-20
- Updated
- 2026-11-02
OSV
S3QL before 2.27 mishandles checksumming, and consequently allows replay attacks in which an attacker who controls the backend can present old versions of the filesystem metadata database as up-to-date, temporarily inject zero-valued bytes into files, or temporarily hide parts of files. This is related to the checksum_basic_mapping function.
- Record
CVE-2018-12088- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2018-12088
S3QL before 2.27 mishandles checksumming, and consequently allows replay attacks in which an attacker who controls the backend can present old versions of the filesystem metadata database as up-to-date, temporarily inject zero-valued bytes into files, or temporarily hide parts of files. This is related to the checksum_basic_mapping function.
- Record
DEBIAN-CVE-2018-12088- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2018-12088
S3QL before 2.27 mishandles checksumming, and consequently allows replay attacks in which an attacker who controls the backend can present old versions of the filesystem metadata database as up-to-date, temporarily inject zero-valued bytes into files, or temporarily hide parts of files. This is related to the checksum_basic_mapping function.
- Record
UBUNTU-CVE-2018-12088- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
s3qlDebian:13 |
before 2.27.1+dfsg-1 | 2.27.1+dfsg-1 |
s3qlDebian:14 |
before 2.27.1+dfsg-1 | 2.27.1+dfsg-1 |
s3qlUbuntu:16.04:LTS |
All versions, plus listed versions 2.13+dfsg-22.15+dfsg-1 |
None known |
s3qlUbuntu:18.04:LTS |
All versions, plus listed versions 2.23+dfsg-12.24+dfsg-12.25+dfsg-12.26+dfsg-1ubuntu12.26+dfsg-1ubuntu22.26+dfsg-3ubuntu12.26+dfsg-4 |
None known |
s3qlUbuntu:20.04:LTS |
All versions, plus listed versions 3.2+dfsg-33.3.2+dfsg-13.3.2+dfsg-1ubuntu1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| 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-2018-12088 is a high vulnerability (CVSS 7.5) in S3ql Project S3ql, published June 10, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.85%, the 79th percentile. Fixed in s3ql 2.27.1+dfsg-1.
References
bitbucket.org/nikratio/s3ql/issues/272/t3_verifypy-test_retrieve-sometimes-fails
groups.google.com/forum
nvd.nist.gov/vuln/detail/CVE-2018-12088
github.com/advisories/GHSA-49xr-rr65-3xpc
security-tracker.debian.org/tracker/CVE-2018-12088
ubuntu.com/security/CVE-2018-12088
cve.org/CVERecord?id=CVE-2018-12088