CVE-2017-10671: Heap-based Buffer Overflow in the de_dotdot function in libhttpd.c in sthttpd before 2.27.1 allows remote atta

Q: How do I fix CVE-2017-10671?

sthttpd: upgrade to 2.27.1. Exact commands for each OS are on this page.

Q: Is CVE-2017-10671 being exploited?

CVE-2017-10671 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2017-10671 affect?

CVE-2017-10671 affects sthttpd. Severity is high (CVSS 7.8). Heap-based Buffer Overflow in the de_dotdot function in libhttpd.c in sthttpd before 2.27.1 allows remote attackers to cause a denial of service (daemon crash) or possibly have unspecified other impact via a crafted filename.

This month

HIGH 7.8UPGRADE

CVE-2017-10671 is a high-severity flaw (CVSS 7.8) affecting sthttpd. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Heap-based Buffer Overflow in the de_dotdot function in libhttpd.c in sthttpd before 2.27.1 allows remote attackers to cause a denial of service (daemon crash) or possibly have unspecified other impact via a crafted filename.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.5% (top 25%)
CISA exploited list	No
Weakness	CWE-787
Published	2017-06-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: sthttpd project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-06-29 08:29 UTCPublished CVE record published
2026-06-17 01:00 UTCUpdated Record last modified

sthttpd project sthttpd UPGRADE

Affected: < 2.27.1

Fixed in: 2.27.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy sthttpd || rpm -q sthttpd || sthttpd --version

2. UPGRADE to 2.27.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade sthttpd

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade sthttpd

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2017-10671?

sthttpd: upgrade to 2.27.1. Exact commands for each OS are on this page.

Is CVE-2017-10671 being exploited?

CVE-2017-10671 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2017-10671 affect?

CVE-2017-10671 affects sthttpd. Severity is high (CVSS 7.8). Heap-based Buffer Overflow in the de_dotdot function in libhttpd.c in sthttpd before 2.27.1 allows remote attackers to cause a denial of service (daemon crash) or possibly have unspecified other impact via a crafted filename.

How urgent is CVE-2017-10671?

Priority 46/100. High severity

Related CVEs

CVE-2021-26843 HIGH 7.5 UPGRADE An issue was discovered in sthttpd through 2.27.1
CVE-2013-0348 LOW 2.1 UPGRADE MITIGATE thttpd.c in sthttpd before 2.26.4-r2 and thttpd 2.25b use world-readable permissions for /var/log/thttpd.log,

References

← Back to latest CVEs