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Fencer Vulns
medium 6.5

CVE-2017-1000099 json

When asking to get a file from a file:// URL, libcurl provides a feature that outputs meta-data about the file using HTTP-like headers.

published 2017-10-04 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-1403

cvss
6.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.7%
EPSS 2.7% chance of exploitation in 30 days, percentile 85%
public exploits
0
none known

Summary

When asking to get a file from a file:// URL, libcurl provides a feature that outputs meta-data about the file using HTTP-like headers. The code doing this would send the wrong buffer to the user (stdout or the application's provide callback), which could lead to other private data from the heap to get inadvertently displayed. The wrong buffer was an uninitialized memory area allocated on the heap and if it turned out to not contain any zero byte, it would continue and display the data following that buffer in memory.

Patch / fix

  • curl openSUSE Tumbleweed 7.79.1-1.1

opensuse advisories openSUSE-SU-2024:10582-1

  • curl Alpine 3.24, Alpine 3.23, Alpine 3.22 +19 more 7.55.0-r0

alpine advisories ALPINE-CVE-2017-1000099

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • curl Arch Linux 7.55-1
  • lib32-curl Arch Linux 7.56.0-1
  • lib32-libcurl-gnutls Arch Linux 7.56.0-1
  • libcurl-gnutls Arch Linux 7.56.0-1
  • lib32-libcurl-compat Arch Linux 7.56.0-1
  • libcurl-compat Arch Linux 7.56.0-1

arch linux advisories AVG-370AVG-371AVG-386AVG-387AVG-388AVG-389

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-1000099 updated cvss 4.7

curl: FILE buffer read out of bounds

  • Red Hat .NET Core 1.0 on Red Hat Enterprise Linux rh-dotnetcore10-curl Red Hat .NET Core 1.1 on Red Hat Enterprise Linux rh-dotnetcore11-curl Red Hat .NET Core 2.0 on Red Hat Enterprise Linux rh-dotnet20-curl Red Hat Ceph Storage 2 curl, libcurl Red Hat Enterprise Linux 5 curl Red Hat Enterprise Linux 6 curl, libcurl
    +4 more products
    Red Hat Enterprise Linux 7 curl, libcurl Red Hat Enterprise Virtualization 3 mingw-virt-viewer, mingw32-virt-viewer, mingw64-virt-viewer Red Hat JBoss Enterprise Web Server 3 curl Red Hat Software Collections httpd24-curl, httpd24-libcurl
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.65% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.