Debian Security Advisory

DSA-3992-1 curl -- security update

Date Reported:
06 Oct 2017
Affected Packages:
curl
Vulnerable:
Yes
Security database references:
In the Debian bugtracking system: Bug 871554, Bug 871555, Bug 877671.
In Mitre's CVE dictionary: CVE-2017-1000100, CVE-2017-1000101, CVE-2017-1000254.
More information:

Several vulnerabilities have been discovered in cURL, an URL transfer library. The Common Vulnerabilities and Exposures project identifies the following problems:

  • CVE-2017-1000100

    Even Rouault reported that cURL does not properly handle long file names when doing an TFTP upload. A malicious HTTP(S) server can take advantage of this flaw by redirecting a client using the cURL library to a crafted TFTP URL and trick it to send private memory contents to a remote server over UDP.

  • CVE-2017-1000101

    Brian Carpenter and Yongji Ouyang reported that cURL contains a flaw in the globbing function that parses the numerical range, leading to an out-of-bounds read when parsing a specially crafted URL.

  • CVE-2017-1000254

    Max Dymond reported that cURL contains an out-of-bounds read flaw in the FTP PWD response parser. A malicious server can take advantage of this flaw to effectively prevent a client using the cURL library to work with it, causing a denial of service.

For the oldstable distribution (jessie), these problems have been fixed in version 7.38.0-4+deb8u6.

For the stable distribution (stretch), these problems have been fixed in version 7.52.1-5+deb9u1.

We recommend that you upgrade your curl packages.