CVE catalog

CVE-2018-16789

shellinabox: CVE-2018-16789

[CVE catalog]

Severity
Medium
Published
Source
[NVD] · [CVE record]
EPSS
5.99% · Oct 25, 2026

libhttp/url.c in shellinabox through 2.20 has an implementation flaw in the HTTP request parsing logic. By sending a crafted multipart/form-data HTTP request, an attacker could exploit this to force shellinaboxd into an infinite loop, exhausting available CPU resources and taking the service down.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
Debianshellinaboxsid2.21+really2.21-2fixed
Debianshellinaboxforky2.21+really2.21-2fixed
Debianshellinaboxtrixie2.21fixed
Debianshellinaboxbookworm2.21fixed
Ubuntushellinabox16.042.17vulnerable
Ubuntushellinabox16.042.18vulnerable
Ubuntushellinabox16.042.19vulnerable
Ubuntushellinabox18.042.20vulnerable
Ubuntushellinabox18.042.20build1vulnerable

Fixed-version evidence

DistributionPackageTypeReleaseFixed versionUrgencyOriginBugs
Debianshellinaboxsourcesid2.21lowNot reportedNot reported
Debianshellinaboxsourceforky2.21lowNot reportedNot reported
Debianshellinaboxsourcetrixie2.21lowNot reportedNot reported
Debianshellinaboxsourcebookworm2.21lowNot reportedNot reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

  • [shellinabox]Fixed

    Source package: [shellinabox]

    Details (2)

    • 2.21+b1 · arm64 · bookworm

      Fixed · Fixed: 2.21

      dsa · shellinabox · debian · bookworm; dsa · shellinabox · debian · 12

    • 2.21+b2 · amd64 · bookworm

      Fixed · Fixed: 2.21

      dsa · shellinabox · debian · bookworm; dsa · shellinabox · debian · 12

[Debian 13 (Trixie)]

  • [shellinabox]Fixed

    Source package: [shellinabox]

    Details (2)

    • 2.21+b3 · amd64 · trixie

      Fixed · Fixed: 2.21

      dsa · shellinabox · debian · 13

    • 2.21+b3 · arm64 · trixie

      Fixed · Fixed: 2.21

      dsa · shellinabox · debian · 13

Observed:

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]