| Name | CVE-2019-6245 |
| Description | An issue was discovered in Anti-Grain Geometry (AGG) 2.4 as used in SVG++ (aka svgpp) 1.2.3. In the function agg::cell_aa::not_equal, dx is assigned to (x2 - x1). If dx >= dx_limit, which is (16384 << poly_subpixel_shift), this function will call itself recursively. There can be a situation where (x2 - x1) is always bigger than dx_limit during the recursion, leading to continual stack consumption. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1656-1, DLA-2872-1, DLA-3376-1 |
| Debian Bugs | 919321, 919322 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| agg (PTS) | buster | 1:2.6.0-r132+dfsg1-3 | fixed |
| trixie, bookworm, bullseye | 1:2.6.1-r134+dfsg1-2 | fixed |
| sid | 1:2.6.1-r134+dfsg1-2.1 | fixed |
| svgpp (PTS) | buster | 1.2.3+dfsg1-6 | vulnerable |
| buster (security) | 1.2.3+dfsg1-6+deb10u1 | fixed |
| bullseye | 1.3.0+dfsg1-4 | vulnerable |
| sid, trixie, bookworm | 1.3.0+dfsg1-6 | vulnerable |
The information below is based on the following data on fixed versions.
Notes
https://github.com/svgpp/svgpp/issues/70
Fixed in src:agg with: https://sourceforge.net/p/agg/svn/119/
and possibly already fixed with the inclusion of 05-fix-recursion-crash.patch
in 2.5+dfsg1-3.
No security impact on svgpp, only used to build examples, see #921097