Cyber Resilience

CVE-2024-34891

Bitrix24 23.300.100

Public PoC
Published
04 November 2024
Modified
05 July 2026
CVSS Score v3.1 6.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
EPSS Score 0.0029 21th percentile
Risk Priority 36 floored blend · peak EPSS

Summary

CVE-2024-34891 is a medium-severity Cleartext Storage of Sensitive Information (CWE-312) vulnerability in Bitrix24 Bitrix24. Its CVSS base score is 6.8 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Credentials In Files (T1552.001); ranked at the 21th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

Insufficiently protected credentials in DAV server settings in 1C-Bitrix Bitrix24 23.300.100 allows remote administrators to read Exchange account passwords via HTTP GET request.

CWE(s)

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1552.001 Credentials In Files Credential Access
Adversaries may search local file systems and remote file shares for files containing insecurely stored credentials.
Why these techniques?

The vulnerability and related advisories expose insufficiently protected credentials (e.g., Exchange, SMTP, AD/LDAP, proxy passwords) in clear text or base64 within web application settings pages or via HTTP requests to attacker-controlled servers, enabling adversaries with admin access to steal them consistent with Unsecured Credentials in Files.

CVEs Like This One

CVE-2024-34885Same product: Bitrix24 Bitrix24
CVE-2024-34883Same product: Bitrix24 Bitrix24
CVE-2024-34887Same product: Bitrix24 Bitrix24
CVE-2024-34882Same product: Bitrix24 Bitrix24
CVE-2023-1713Same product: Bitrix24 Bitrix24
CVE-2023-1717Same product: Bitrix24 Bitrix24
CVE-2023-1716Same product: Bitrix24 Bitrix24
CVE-2023-1718Same product: Bitrix24 Bitrix24
CVE-2023-1714Same product: Bitrix24 Bitrix24
CVE-2023-1720Same product: Bitrix24 Bitrix24

Affected Assets

bitrix24
bitrix24
23.300.100

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

Detect
Catch it (NIST detect / respond)

Harden
Shrink the surface (DISA STIG)
  • 4 hardening rules · 3 OS baselines
Validate
Prove the fix (OWASP ASVS)
  • V14.2.8

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-312

Training on secure data handling discourages cleartext storage of sensitive information.

addresses: CWE-312

Data action mapping can detect storage actions that leave sensitive information in cleartext.

addresses: CWE-312

Configuration policies can mandate secure storage methods to avoid cleartext storage of sensitive information.

addresses: CWE-312

Policy requires protection measures such as encryption for sensitive data stored on media, preventing cleartext exposure.

addresses: CWE-312

Key-management policy requires protected storage of key material, preventing cleartext storage of sensitive cryptographic keys.

addresses: CWE-312

Requiring confidentiality protection for information at rest eliminates cleartext storage of sensitive data on persistent media.

addresses: CWE-312

Reduces cleartext storage of sensitive data when OPSEC identifies and mandates protection of key information artifacts.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.DS-01 full match
prevents

Encryption and cryptographic controls for data-at-rest directly prevent cleartext storage of sensitive information.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

mitigates

Requiring non-standard deletion or physical destruction of media ensures that sensitive information is not left in cleartext on discarded or repurposed equipment.

mitigates

Secure deletion of data before device transfer prevents residual sensitive information from remaining in cleartext on storage media that leave organizational control.

mitigates

Secure deletion of obsolete or temporary copies prevents sensitive data from remaining in cleartext on disk after its intended lifetime.

A.8.11 Data masking partial match
mitigates

Substituting real values with hashes or encrypted tokens before storage reduces the quantity of cleartext sensitive information that ends up persisted on disk.

detects

When clear-text sensitive data is detected leaving controlled storage, the control can block the transfer, thereby limiting the exposure that would result from unencrypted storage on external media or cloud services.

mitigates

By insisting that any retained test copies be stored securely and only for testing, the control reduces the likelihood that clear-text operational data will persist on disk or in backups.

Hardening callouts derived

Configuration rules from DISA STIG baselines that reduce the attack surface for weaknesses of the type cited by this CVE. Derived transitively via CVE→CWE→STIG over `controls_xwalks` (authoritative rows only).

Oracle Linux 8 (1 rule)
  • V-248525 All OL 8 local disk partitions must implement cryptographic mechanisms to prevent unauthorized disclosure or modification of all information that requires at-rest protection. via CWE-312

References