| Name | CVE-2020-22284 |
| Description | A buffer overflow vulnerability in the zepif_linkoutput() function of Free Software Foundation lwIP git head version and version 2.1.2 allows attackers to access sensitive information via a crafted 6LoWPAN packet. |
| 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 | 991646 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| lwip (PTS) | buster (security), buster, buster (lts) | 2.0.3-3+deb10u2 | fixed |
| bullseye | 2.1.2+dfsg1-8+deb11u1 | fixed |
| bookworm | 2.1.3+dfsg1-2 | fixed |
| sid, trixie | 2.2.0+dfsg1-8 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| lwip | source | buster | (not affected) | | | |
| lwip | source | bullseye | 2.1.2+dfsg1-8+deb11u1 | | | |
| lwip | source | (unstable) | 2.1.3+dfsg1-1 | | | 991646 |
Notes
[buster] - lwip <not-affected> (vulnerable code is not present)
https://savannah.nongnu.org/bugs/index.php?58554
https://git.savannah.nongnu.org/cgit/lwip.git/commit/?id=8363c24e45a32728e385cfc2c3c36d88a8a9e70b (master)
https://git.savannah.nongnu.org/cgit/lwip.git/commit/?id=379d55044e9181533f1fd4d0e0cf89bc01cb9b8b (STABLE-2_1_3_RC1)
Vulnerable feature introduced with https://git.savannah.nongnu.org/cgit/lwip.git/commit/?id=43a55003da622851b1c1677c8e7cb75e9430300f (first contained in STABLE-2_1_0_RC1)