CVE-2024-8334 Overview
CVE-2024-8334 affects master-nan Sweet-CMS up to commit 5f441e022b8876f07cde709c77b5be6d2f262e3f. The vulnerability resides in the LogHandler function within middleware/log.go. Attackers can manipulate log input to trigger improper output neutralization for logs [CWE-117]. The flaw is exploitable remotely and requires low privileges. Because Sweet-CMS follows a rolling release model, the vendor does not publish discrete affected or fixed version numbers. The patch is tracked under commit identifier 2024c370e6c78b07b358c9d4257fa5d1be732c38.
Critical Impact
Remote attackers with low privileges can inject unsanitized content into application logs, enabling log forging and potentially misleading downstream log processors or analysts.
Affected Products
- master-nan Sweet-CMS up to commit 5f441e022b8876f07cde709c77b5be6d2f262e3f
- Component: middleware/log.go — function LogHandler
- Distribution model: rolling release (no discrete version identifiers)
Discovery Timeline
- 2024-08-30 - CVE-2024-8334 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-8334
Vulnerability Analysis
The vulnerability is classified as improper output neutralization for logs [CWE-117]. The LogHandler function in middleware/log.go writes attacker-influenced input into log records without neutralizing control characters or HTML entities. Attackers submit crafted HTTP request data that gets forwarded to the logging middleware. The middleware then writes that data into log storage or downstream viewers verbatim.
The attack requires network access and a low-privileged account. Confidentiality and availability are not directly impacted, but log integrity is compromised. Forged log entries can obscure malicious activity, complicate incident response, or trigger cross-site scripting when logs are rendered in a web-based log viewer.
Root Cause
The root cause is missing sanitization of user-supplied data before it enters the logging pipeline. The patched commit adds the standard library html package import in utils/tools.go and threads sweet-cms/utils into middleware/log.go. This indicates the fix routes logged input through HTML-escaping utilities before writing to log sinks.
Attack Vector
An authenticated remote user sends HTTP requests containing newline characters, ANSI escape sequences, or HTML fragments. The LogHandler middleware records these values into logs without encoding. If logs are rendered in a browser-based console, injected HTML or JavaScript can execute in the analyst's session.
// Patch reference: middleware/log.go — added utils import
"sweet-cms/form/response"
"sweet-cms/model"
"sweet-cms/service"
+ "sweet-cms/utils"
"time"
)
// Source: https://github.com/master-nan/sweet-cms/commit/2024c370e6c78b07b358c9d4257fa5d1be732c38
// Patch reference: utils/tools.go — added html package for output neutralization
ut "github.com/go-playground/universal-translator"
"github.com/go-playground/validator/v10"
"github.com/pkg/errors"
+ "html"
"io"
"math/rand"
"net/http"
// Source: https://github.com/master-nan/sweet-cms/commit/2024c370e6c78b07b358c9d4257fa5d1be732c38
The patch introduces html escaping utilities that neutralize logged input before it reaches log storage.
Detection Methods for CVE-2024-8334
Indicators of Compromise
- Log entries containing raw newline (\n, \r) or ANSI escape sequences (\\x1b) in fields sourced from HTTP requests.
- Log entries containing unescaped HTML tags such as <script>, <img>, or <iframe> within Sweet-CMS middleware log output.
- Duplicate or spoofed log lines mimicking legitimate application events with mismatched timestamps.
Detection Strategies
- Parse Sweet-CMS logs and flag records where user-controlled fields contain CR/LF, escape codes, or HTML markup.
- Correlate log injection attempts with the originating authenticated user session and source IP.
- Compare log content byte length against expected schema to identify anomalously large log records.
Monitoring Recommendations
- Forward Sweet-CMS application logs to a centralized log analytics platform for schema validation.
- Alert on any log field containing raw HTML entities or ANSI control sequences from LogHandler output.
- Monitor for unusual browser-side errors when analysts view Sweet-CMS logs, which may indicate rendered injected content.
How to Mitigate CVE-2024-8334
Immediate Actions Required
- Update Sweet-CMS to a build that includes commit 2024c370e6c78b07b358c9d4257fa5d1be732c38 or later.
- Audit middleware/log.go in your deployed build to confirm the sweet-cms/utils import and HTML escaping are present.
- Restrict access to log viewing interfaces to trusted administrative accounts only.
Patch Information
The vendor issued the fix in commit 2024c370e6c78b07b358c9d4257fa5d1be732c38, which imports the Go standard library html package and adds output neutralization utilities. Because Sweet-CMS uses rolling releases, operators must pull the latest source from the Sweet-CMS repository and rebuild rather than tracking a version number. Reference: GitHub Commit Update and the GitHub Issue Discussion.
Workarounds
- Place Sweet-CMS behind a reverse proxy that strips CR/LF and control characters from inbound HTTP headers and body fields.
- Render logs only as plaintext in downstream viewers; disable HTML rendering in log dashboards until patched.
- Apply Web Application Firewall (WAF) rules that block requests containing encoded newline sequences targeting authenticated Sweet-CMS endpoints.
# Example: pull the patched source and rebuild Sweet-CMS
git clone https://github.com/master-nan/sweet-cms.git
cd sweet-cms
git checkout 2024c370e6c78b07b358c9d4257fa5d1be732c38
go build ./...
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
