CVE-2015-8400

The HTTPS fallback implementation in Shell In A Box (aka shellinabox) before 2.19 makes it easier...

7.4 HighFix available

The HTTPS fallback implementation in Shell In A Box (aka shellinabox) before 2.19 makes it easier for remote attackers to conduct DNS rebinding attacks via the "/plain" URL.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: None
Integrity: High
Availability: None

Exploit likelihood

2.04%Up 0.7 points since Feb 4, 2022

What each source reports

NVD Score used 7.4

The HTTPS fallback implementation in Shell In A Box (aka shellinabox) before 2.19 makes it easier for remote attackers to conduct DNS rebinding attacks via the "/plain" URL.

Record: CVE-2015-8400
CVSS 3.0: 7.4 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness: CWE-254
Updated: 2026-11-02

CVE List No score

The HTTPS fallback implementation in Shell In A Box (aka shellinabox) before 2.19 makes it easier for remote attackers to conduct DNS rebinding attacks via the "/plain" URL.

Record: CVE-2015-8400
Updated: 2026-11-02

EUVDEUVD-2015-8282 No score

The HTTPS fallback implementation in Shell In A Box (aka shellinabox) before 2.19 makes it easier for remote attackers to conduct DNS rebinding attacks via the "/plain" URL.

Record: EUVD-2015-8282
Updated: 2026-11-03

GitHub AdvisoriesGHSA-56hv-7v48-w28m 7.4

The HTTPS fallback implementation in Shell In A Box (aka shellinabox) before 2.19 makes it easier...

The HTTPS fallback implementation in Shell In A Box (aka shellinabox) before 2.19 makes it easier for remote attackers to conduct DNS rebinding attacks via the "/plain" URL.

Record: GHSA-56hv-7v48-w28m
CVSS 3.0: 7.4 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
Updated: 2026-11-02

OSV 7.4

The HTTPS fallback implementation in Shell In A Box (aka shellinabox) before 2.19 makes it easier for remote attackers to conduct DNS rebinding attacks via the "/plain" URL.

Record: CVE-2015-8400
CVSS 3.0: 7.4 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
Updated: 2026-11-02

OSVDEBIAN-CVE-2015-8400 7.4

The HTTPS fallback implementation in Shell In A Box (aka shellinabox) before 2.19 makes it easier for remote attackers to conduct DNS rebinding attacks via the "/plain" URL.

Record: DEBIAN-CVE-2015-8400
CVSS 3.0: 7.4 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
Updated: 2026-11-02

OSVUBUNTU-CVE-2015-8400 7.4

The HTTPS fallback implementation in Shell In A Box (aka shellinabox) before 2.19 makes it easier for remote attackers to conduct DNS rebinding attacks via the "/plain" URL.

Record: UBUNTU-CVE-2015-8400
CVSS 3.0: 7.4 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`shellinabox` Debian:12	before 2.19	2.19
`shellinabox` Debian:13	before 2.19	2.19
`shellinabox` Debian:14	before 2.19	2.19
`shellinabox` Ubuntu:14.04:LTS	before 2.14-1ubuntu0.1, plus listed versions 2.14-1	2.14-1ubuntu0.1

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2015-8400 is a high vulnerability (CVSS 7.4) in Shellinabox Project Shellinabox, published January 12, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.04%, the 81st percentile. Fixed in shellinabox 2.19.

References

Show 5 moreShow less