| Name | CVE-2020-6750 |
| Description | GSocketClient in GNOME GLib through 2.62.4 may occasionally connect directly to a target address instead of connecting via a proxy server when configured to do so, because the proxy_addr field is mishandled. This bug is timing-dependent and may occur only sporadically depending on network delays. The greatest security relevance is in use cases where a proxy is used to help with privacy/anonymity, even though there is no technical barrier to a direct connection. NOTE: versions before 2.60 are unaffected. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 948554 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| glib2.0 (PTS) | jessie, jessie (lts) | 2.42.1-1+deb8u6 | fixed |
| stretch (security) | 2.50.3-2+deb9u3 | fixed |
| stretch (lts), stretch | 2.50.3-2+deb9u5 | fixed |
| buster | 2.58.3-2+deb10u3 | fixed |
| buster (security) | 2.58.3-2+deb10u5 | fixed |
| bullseye | 2.66.8-1+deb11u1 | fixed |
| bookworm | 2.74.6-2 | fixed |
| trixie | 2.78.4-1 | fixed |
| sid | 2.78.4-6 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| glib2.0 | source | wheezy | (not affected) | | | |
| glib2.0 | source | jessie | (not affected) | | | |
| glib2.0 | source | stretch | (not affected) | | | |
| glib2.0 | source | buster | (not affected) | | | |
| glib2.0 | source | (unstable) | 2.62.5-1 | | | 948554 |
Notes
[buster] - glib2.0 <not-affected> (Vulnerable code introduced later, regreession from 2.60.0)
[stretch] - glib2.0 <not-affected> (Vulnerable code introduced later, regreession from 2.60.0)
[jessie] - glib2.0 <not-affected> (Vulnerable code introduced later, regreession from 2.60.0)
https://gitlab.gnome.org/GNOME/glib/issues/1989
[wheezy] - glib2.0 <not-affected> (Vulnerable code introduced later, regression from 2.60.0)