CVE-2017-1000100
Fixed in a distro release EPSS 4%CVSS 6.5
When doing a TFTP transfer and curl/libcurl is given a URL that contains a very long file name (longer than about 515 bytes), the file name is truncated to fit within the buffer boundaries, but the buffer size is still wrongly updated to use the untruncated length. This too large value is then used in the sendto() call, making curl attempt to send more data than what is actually put into the buffer. The endto() function will then read beyond the end of the heap based buffer. A malicious HTTP(S) server could redirect a vulnerable libcurl-using client to a crafted TFTP URL (if the client hasn't restricted which protocols it allows redirects to) and trick it to send private memory contents to a remote server over UDP. Limit curl's redirect protocols with --proto-redir and libcurl's with CURLOPT_REDIR_PROTOCOLS.
Products: haxx libcurl
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.10 | curl | 7.55.0-r0 |
| Alpine 3.11 | curl | 7.55.0-r0 |
| Alpine 3.12 | curl | 7.55.0-r0 |
| Alpine 3.13 | curl | 7.55.0-r0 |
| Alpine 3.14 | curl | 7.55.0-r0 |
| Alpine 3.15 | curl | 7.55.0-r0 |
| Alpine 3.16 | curl | 7.55.0-r0 |
| Alpine 3.17 | curl | 7.55.0-r0 |
| Alpine 3.18 | curl | 7.55.0-r0 |
| Alpine 3.19 | curl | 7.55.0-r0 |
| Alpine 3.20 | curl | 7.55.0-r0 |
| Alpine 3.21 | curl | 7.55.0-r0 |
| Alpine 3.22 | curl | 7.55.0-r0 |
| Alpine 3.23 | curl | 7.55.0-r0 |
| Alpine 3.24 | curl | 7.55.0-r0 |
| Alpine 3.3 | curl | 7.55.0-r0 |
| Alpine 3.4 | curl | 7.55.0-r0 |
| Alpine 3.5 | curl | 7.55.0-r0 |
| Alpine 3.6 | curl | 7.55.0-r0 |
| Alpine 3.7 | curl | 7.55.0-r0 |
| Alpine 3.8 | curl | 7.55.0-r0 |
| Alpine 3.9 | curl | 7.55.0-r0 |
| Arch Linux | curl | 7.55-1 |
| Arch Linux | lib32-curl | 7.56.0-1 |
| Arch Linux | lib32-libcurl-compat | 7.56.0-1 |
| Arch Linux | lib32-libcurl-gnutls | 7.56.0-1 |
| Arch Linux | libcurl-compat | 7.56.0-1 |
| Arch Linux | libcurl-gnutls | 7.56.0-1 |
| Debian 12 | curl | 7.55.0-1 |
| Debian 13 | curl | 7.55.0-1 |
| Debian 14 | curl | 7.55.0-1 |
| Debian 7 | curl | 7.26.0-1+wheezy20 |
| Debian 8 | curl | 7.38.0-4+deb8u6 |
| Debian 9 | curl | 7.52.1-5+deb9u1 |
| Red Hat rhel software collections 3 | httpd24-curl | 0:7.61.1-1.el6 |
| Red Hat rhel software collections 3 | httpd24-curl | 0:7.61.1-1.el7 |
| Red Hat rhel software collections 3 | httpd24-curl-debuginfo | 0:7.61.1-1.el6 |
| Red Hat rhel software collections 3 | httpd24-curl-debuginfo | 0:7.61.1-1.el7 |
| Red Hat rhel software collections 3 | httpd24-httpd | 0:2.4.34-7.el6 |
| Red Hat rhel software collections 3 | httpd24-httpd | 0:2.4.34-7.el7 |
| Red Hat rhel software collections 3 | httpd24-httpd-debuginfo | 0:2.4.34-7.el6 |
| Red Hat rhel software collections 3 | httpd24-httpd-debuginfo | 0:2.4.34-7.el7 |
| Red Hat rhel software collections 3 | httpd24-httpd-devel | 0:2.4.34-7.el6 |
| Red Hat rhel software collections 3 | httpd24-httpd-devel | 0:2.4.34-7.el7 |
| Red Hat rhel software collections 3 | httpd24-httpd-manual | 0:2.4.34-7.el6 |
| Red Hat rhel software collections 3 | httpd24-httpd-manual | 0:2.4.34-7.el7 |
| Red Hat rhel software collections 3 | httpd24-httpd-tools | 0:2.4.34-7.el6 |
| Red Hat rhel software collections 3 | httpd24-httpd-tools | 0:2.4.34-7.el7 |
| Red Hat rhel software collections 3 | httpd24-libcurl | 0:7.61.1-1.el7 |
| Red Hat rhel software collections 3 | httpd24-libcurl | 0:7.61.1-1.el6 |
| Red Hat rhel software collections 3 | httpd24-libcurl-devel | 0:7.61.1-1.el6 |
| Red Hat rhel software collections 3 | httpd24-libcurl-devel | 0:7.61.1-1.el7 |
| Red Hat rhel software collections 3 | httpd24-libnghttp2 | 0:1.7.1-7.el6 |
| Red Hat rhel software collections 3 | httpd24-libnghttp2 | 0:1.7.1-7.el7 |
| Red Hat rhel software collections 3 | httpd24-libnghttp2-devel | 0:1.7.1-7.el6 |
| Red Hat rhel software collections 3 | httpd24-libnghttp2-devel | 0:1.7.1-7.el7 |
| Red Hat rhel software collections 3 | httpd24-mod_ldap | 0:2.4.34-7.el6 |
| Red Hat rhel software collections 3 | httpd24-mod_ldap | 0:2.4.34-7.el7 |
| Red Hat rhel software collections 3 | httpd24-mod_md | 0:2.4.34-7.el7 |
| Red Hat rhel software collections 3 | httpd24-mod_proxy_html | 1:2.4.34-7.el6 |
| Red Hat rhel software collections 3 | httpd24-mod_proxy_html | 1:2.4.34-7.el7 |
| Red Hat rhel software collections 3 | httpd24-mod_session | 0:2.4.34-7.el6 |
| Red Hat rhel software collections 3 | httpd24-mod_session | 0:2.4.34-7.el7 |
| Red Hat rhel software collections 3 | httpd24-mod_ssl | 1:2.4.34-7.el6 |
| Red Hat rhel software collections 3 | httpd24-mod_ssl | 1:2.4.34-7.el7 |
| Red Hat rhel software collections 3 | httpd24-nghttp2 | 0:1.7.1-7.el6 |
| Red Hat rhel software collections 3 | httpd24-nghttp2 | 0:1.7.1-7.el7 |
| Red Hat rhel software collections 3 | httpd24-nghttp2-debuginfo | 0:1.7.1-7.el6 |
| Red Hat rhel software collections 3 | httpd24-nghttp2-debuginfo | 0:1.7.1-7.el7 |
| SUSE Linux Enterprise Desktop 12 SP2 | curl | 7.37.0-37.3.1 |
| SUSE Linux Enterprise Desktop 12 SP3 | curl | 7.37.0-37.3.1 |
| SUSE Linux Enterprise Server 11 SP4 | curl | 7.19.7-1.70.3.1 |
| SUSE Linux Enterprise Server 11-SECURITY | curl-openssl1 | 7.19.7-1.70.3.1 |
| SUSE Linux Enterprise Server 12 SP2 | curl | 7.37.0-37.3.1 |
| SUSE Linux Enterprise Server 12 SP3 | curl | 7.37.0-37.3.1 |
| SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 | curl | 7.37.0-37.3.1 |
| SUSE Linux Enterprise Server for SAP Applications 11 SP4 | curl | 7.19.7-1.70.3.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP2 | curl | 7.37.0-37.3.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | curl | 7.37.0-37.3.1 |
| SUSE Linux Enterprise Software Development Kit 11 SP4 | curl | 7.19.7-1.70.3.1 |
| SUSE Linux Enterprise Software Development Kit 12 SP2 | curl | 7.37.0-37.3.1 |
| SUSE Linux Enterprise Software Development Kit 12 SP3 | curl | 7.37.0-37.3.1 |
| SUSE Studio Onsite 1.3 | curl | 7.19.7-1.20.53.3.1 |
| Ubuntu 14.04 LTS | curl | 7.35.0-1ubuntu2.11 |
| Ubuntu 16.04 LTS | curl | 7.47.0-1ubuntu2.3 |
| openSUSE Tumbleweed | curl | 7.79.1-1.1 |