CVE-2022-24795

NameCVE-2022-24795
Descriptionyajl-ruby is a C binding to the YAJL JSON parsing and generation library. The 1.x branch and the 2.x branch of `yajl` contain an integer overflow which leads to subsequent heap memory corruption when dealing with large (~2GB) inputs. The reallocation logic at `yajl_buf.c#L64` may result in the `need` 32bit integer wrapping to 0 when `need` approaches a value of 0x80000000 (i.e. ~2GB of data), which results in a reallocation of buf->alloc into a small heap chunk. These integers are declared as `size_t` in the 2.x branch of `yajl`, which practically prevents the issue from triggering on 64bit platforms, however this does not preclude this issue triggering on 32bit builds on which `size_t` is a 32bit integer. Subsequent population of this under-allocated heap chunk is based on the original buffer size, leading to heap memory corruption. This vulnerability mostly impacts process availability. Maintainers believe exploitation for arbitrary code execution is unlikely. A patch is available and anticipated to be part of yajl-ruby version 1.4.2. As a workaround, avoid passing large inputs to YAJL.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-3492-1, DLA-3516-1
Debian Bugs1014803, 1040036, 1040146, 1040161

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
burp (PTS)bullseye2.2.18-8vulnerable
bookworm3.1.4-1vulnerable
sid, trixie3.1.4-3.1fixed
epics-base (PTS)bookworm7.0.3.1-4fixed
sid, trixie7.0.8.1+dfsg1-6fixed
r-cran-jsonlite (PTS)bullseye1.7.2+dfsg-1vulnerable
bookworm1.8.4+dfsg-1vulnerable
sid, trixie1.8.9+dfsg-1fixed
ruby-yajl (PTS)bullseye1.4.1-1vulnerable
sid, trixie, bookworm1.4.3-1fixed
xqilla (PTS)bullseye2.3.4-1fixed
yajl (PTS)bullseye2.1.0-3+deb11u2fixed
bookworm2.1.0-3+deb12u2fixed
sid, trixie2.1.0-5fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
burpsourcebuster2.1.32-2+deb10u1DLA-3516-1
burpsource(unstable)3.1.4-21040146
epics-basesource(unstable)(not affected)
r-cran-jsonlitesource(unstable)1.8.8+dfsg-11040161
ruby-yajlsource(unstable)1.4.3-11014803
xqillasource(unstable)(not affected)
yajlsourcebuster2.1.0-3+deb10u2DLA-3492-1
yajlsourcebullseye2.1.0-3+deb11u2
yajlsourcebookworm2.1.0-3+deb12u2
yajlsource(unstable)2.1.0-41040036

Notes

[bullseye] - ruby-yajl <no-dsa> (Minor issue)
[buster] - ruby-yajl <no-dsa> (Minor issue)
[stretch] - ruby-yajl <no-dsa> (Minor issue)
[bookworm] - burp <no-dsa> (Minor issue)
[bullseye] - burp <no-dsa> (Minor issue)
- epics-base <not-affected> (Forked parser not affected, #1040159)
[bookworm] - r-cran-jsonlite <no-dsa> (Minor issue)
[bullseye] - r-cran-jsonlite <no-dsa> (Minor issue)
[buster] - r-cran-jsonlite <no-dsa> (Minor issue)
- xqilla <not-affected> (Vulnerable code not present; embeds not-affected ancient yajl version)
xqilla's embedded yajl is ancient (around 0.2.2), not having the vulnerable code
https://github.com/brianmario/yajl-ruby/security/advisories/GHSA-jj47-x69x-mxrm
https://github.com/brianmario/yajl-ruby/commit/7168bd79b888900aa94523301126f968a93eb3a6
https://github.com/brianmario/yajl-ruby/commit/e8de283a6d64f0902740fd09e858fc3d7d803161
https://github.com/lloyd/yajl/issues/239
burp fix: https://github.com/grke/burp/commit/5ce44cdf7018767b53a4c5466c62e4dc99d0bc93
epics-base: https://github.com/epics-base/epics-base/issues/405
r-cran-jsonlite: https://github.com/jeroen/jsonlite/issues/431
r-cran-jsonlite: https://github.com/jeroen/jsonlite/commit/e425ef9cb39500687d83654a565c8abd203ff8ba (v1.8.8)

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