Security readout for executives and security teams
Plain-English summary
Synology CardDAV Server had an SQL injection flaw that could let a logged-in remote user tamper with database queries. The likely business impact is exposure or alteration of contact/calendar-related data, with some service disruption possible. The public sources do not name the exact request vector.
Executive priority
Treat this as a high-priority patch for any Synology CardDAV Server in use, especially if exposed beyond a small trusted network. Authentication lowers opportunistic risk, but compromised valid accounts could still produce high data impact.
Technical view
CVE-2022-27613 is CWE-89 in the Synology CardDAV Server webapi component before 6.0.10-0153. CVSS 3.1 is 8.3: network reachable, low complexity, low privileges required, no user interaction, high confidentiality and integrity impact, low availability impact.
Likely exposure
Exposure is limited to Synology CardDAV Server installations before 6.0.10-0153. Because exploitation requires authentication, risk is higher where CardDAV is internet-accessible, broadly reachable internally, or usable by many low-privilege accounts.
Exploitation context
The provided data does not show CISA KEV listing or cited active exploitation. The vulnerability is still important because SQL injection can affect sensitive data and authenticated access can come from compromised or poorly governed accounts.
Researcher notes
The public description leaves the SQL injection vector unspecified. Avoid assuming a particular endpoint or payload. Focus validation on version exposure, reachable webapi surface, authentication context, and logs for anomalous authenticated access around the disclosure window.
Mitigation direction
- Upgrade Synology CardDAV Server to 6.0.10-0153 or later.
- Review Synology advisory Synology_SA_21_06 for vendor-specific guidance.
- Limit CardDAV Server access to trusted networks or VPN where possible.
- Remove unused CardDAV accounts and enforce strong authentication controls.
- Monitor for unusual authenticated webapi activity and database errors.
Validation and detection
- Inventory Synology systems running CardDAV Server.
- Confirm each CardDAV Server package version is 6.0.10-0153 or later.
- Identify whether CardDAV/webapi endpoints are reachable from the internet.
- Review recent access logs for suspicious authenticated activity.
- Check account lists for stale, shared, or unexpected users.
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-89: Database access and collection lookup
Injection into data stores can inform collection, data access, and exfiltration detection reviews. 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 lookupDatabase behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2022-27613 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
- High
- CVSS
- 8.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L2.85.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.3HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://www.synology.com/security/advisory/Synology_SA_21_06CVE reference · x_refsource_CONFIRM
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 Special Elements used in an SQL Command ('SQL Injection')
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.