Security readout for executives and security teams
Plain-English summary
CVE-2018-25101 is a cross-site scripting issue in l2c2technologies Koha. A remote authenticated user could manipulate a library catalog request so script-like content is reflected or rendered. Business impact is mainly user trust, session exposure, and unauthorized interface actions, not direct server takeover.
Executive priority
Handle in normal vulnerability remediation cycles unless this Koha instance is internet-facing or high-trust for patrons and staff. Prioritize patch verification because the issue is remotely reachable, but current evidence indicates medium severity and no confirmed active exploitation.
Technical view
The issue affects /cgi-bin/koha/opac-MARCdetail.pl in Koha up to 20180108. The biblionumber argument is not safely handled, causing CWE-79 cross-site scripting. CVSS v2 is 4.0 with network access, low complexity, authentication required, partial integrity impact, and no confidentiality or availability impact recorded.
Likely exposure
Exposure is limited to l2c2technologies Koha deployments at version 20180108 or earlier where opac-MARCdetail.pl is reachable. The CVSS vector indicates authentication is required, but the affected OPAC path may still be broadly exposed in library environments.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. VulDB says the attack may be initiated remotely and requires permissions. Treat this as plausible web-app abuse, but not as proven in-the-wild exploitation from the provided evidence.
Researcher notes
Key gaps are exact fixed release, affected fork lineage, and exploit-in-the-wild evidence. The patch reference is the strongest remediation anchor. Do not broaden affected products beyond l2c2technologies Koha as named in the source bundle.
Mitigation direction
- Upgrade the affected Koha component to a version containing the cited patch.
- Apply commit 950fc8e101886821879066b33e389a47fb0a9782 if maintaining this code branch.
- Check vendor or project guidance for the exact fixed release.
- Limit access to affected OPAC functionality where business requirements allow.
- Monitor web logs for suspicious markup-like biblionumber values.
Validation and detection
- Inventory Koha deployments and identify any l2c2technologies build up to 20180108.
- Confirm whether the cited patch commit is present in deployed code.
- Verify /cgi-bin/koha/opac-MARCdetail.pl is reachable only as intended.
- Review logs for unusual requests targeting opac-MARCdetail.pl and biblionumber.
- Run authorized regression testing for reflected script handling after remediation.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2018-25101 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4 (2.0)
- Known Exploited
- No
- Published
Vector: AV:N/AC:L/Au:S/C:N/I:P/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
AV:N/AC:L/Au:S/C:N/I:P/A:N82.9Primary CVE scoreVulnerability scoring details
Base CVSS 2.0 score
4MediumVector: AV:N/AC:L/Au:S/C:N/I:P/A:N
Source materials
- CVE List V5 sourceCVE List V5
- VDB-261677 | l2c2technologies Koha opac-MARCdetail.pl cross site scriptingCVE reference · vdb-entry, technical-description
- VDB-261677 | CTI Indicators (IOB, IOC, TTP, IOA)CVE reference · signature, permissions-required
- https://github.com/l2c2technologies/Koha/commit/950fc8e101886821879066b33e389a47fb0a9782CVE reference · patch
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.