CVE-2016-6903
lshell 0.9.16 allows remote authenticated users to break out of a limited shell and execute...
CVE-2016-6903 is a critical vulnerability (CVSS 9.9) in Lshell Project Lshell, published April 24, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.98%, the 92nd percentile. Fixed in python-lshell 0.9.18-2.mga5.
lshell 0.9.16 allows remote authenticated users to break out of a limited shell and execute arbitrary commands.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
lshell 0.9.16 allows remote authenticated users to break out of a limited shell and execute arbitrary commands.
- Record
CVE-2016-6903- CVSS 3.0
- 9.9 Critical
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - CVSS 2.0
- 9.0 High
AV:N/AC:L/Au:S/C:C/I:C/A:C - Weakness
- CWE-264
- Updated
- 2026-11-02
CVE List No score
lshell 0.9.16 allows remote authenticated users to break out of a limited shell and execute arbitrary commands.
- Record
CVE-2016-6903- Updated
- 2026-11-02
EUVDEUVD-2016-7788 No score
lshell 0.9.16 allows remote authenticated users to break out of a limited shell and execute arbitrary commands.
- Record
EUVD-2016-7788- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-vw92-qfr4-w98m
lshell 0.9.16 allows remote authenticated users to break out of a limited shell and execute...
lshell 0.9.16 allows remote authenticated users to break out of a limited shell and execute arbitrary commands.
- Record
GHSA-vw92-qfr4-w98m- CVSS 3.0
- 9.9 Critical
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
OSV
lshell 0.9.16 allows remote authenticated users to break out of a limited shell and execute arbitrary commands.
- Record
CVE-2016-6903- CVSS 3.0
- 9.9 Critical
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
OSVPYSEC-2017-154
lshell 0.9.16 allows remote authenticated users to break out of a limited shell and execute arbitrary commands.
- Record
PYSEC-2017-154- CVSS 3.0
- 9.9 Critical
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2016-6903
lshell 0.9.16 allows remote authenticated users to break out of a limited shell and execute arbitrary commands.
- Record
UBUNTU-CVE-2016-6903- CVSS 3.0
- 9.9 Critical
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
OSVMGASA-2017-0126 No score
Updated python-lshell package fixes security vulnerabilities
Shell outbreak due to bad syntax parse (CVE-2016-6902). Shell outbreak with multiline commands (CVE-2016-6903).
- Record
MGASA-2017-0126- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
python-lshellMageia:5 |
before 0.9.18-2.mga5 | 0.9.18-2.mga5 |
limited-shellPyPI |
through 0.9.16 | None known |
lshellUbuntu:16.04:LTS |
All versions, plus listed versions 0.9.17-1 |
None known |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD, OSV |
References
bugzilla.redhat.com/show_bug.cgi?id=1369345
securityfocus.com/bid/92591
bugs.debian.org/cgi-bin/bugreport.cgi?bug=834946
openwall.com/lists/oss-security/2016/08/22/17
github.com/ghantoos/lshell/issues/149
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nvd.nist.gov/vuln/detail/CVE-2016-6903
advisories.mageia.org/MGASA-2017-0126.html
bugs.mageia.org/show_bug.cgi?id=19235
ubuntu.com/security/CVE-2016-6903
cve.org/CVERecord?id=CVE-2016-6903