erlang-cowlib - Debian Package Tracker

general

source: erlang-cowlib (main)
version: 1.3.0-3
maintainer: Debian Erlang Packagers (archive) (DMD)
uploaders: Balint Reczey [DMD]
arch: any
std-ver: 4.1.4
VCS: Git (Browse, QA)

versions [more versions can be listed by madison] [old versions available from snapshot.debian.org]

[pool directory]

o-o-stable: 1.3.0-3
oldstable: 1.3.0-3
stable: 1.3.0-3
testing: 1.3.0-3
unstable: 1.3.0-3

versioned links

1.3.0-3: [.dsc, use dget on this link to retrieve source package] [changelog] [copyright] [rules] [control]

binaries

erlang-cowlib (1 bugs: 0, 0, 1, 0)

action needed

A new upstream version is available: 2.17.0 high

A new upstream version 2.17.0 is available, you should consider packaging it.

Created: 2025-11-27 Last update: 2026-06-10 22:32

2 security issues in sid high

There are 2 open security issues in sid.

2 important issues:

CVE-2026-7790: Uncontrolled Resource Consumption vulnerability in ninenines cowlib (cow_http_te module) allows Excessive Allocation. The chunked transfer-encoding parser in cow_http_te accepts an unbounded number of hex digits in the chunk-size field. Each digit causes a bignum multiplication (Len * 16 + digit), so parsing N hex digits requires O(N²) CPU work and O(N) memory. Additionally, when input is drip-fed, the parser discards the accumulated length on each partial read and restarts from zero on resumption, raising the cost to O(N³). An unauthenticated remote attacker can exploit this by sending an HTTP/1.1 request with Transfer-Encoding: chunked and a very long chunk-size hex string to cause denial of service through CPU exhaustion and memory amplification. This vulnerability is associated with program file src/cow_http_te.erl and program routines cow_http_te:stream_chunked/2, cow_http_te:chunked_len/4. This issue affects cowlib: from 0.6.0 before 2.16.1.
CVE-2026-43970: Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in ninenines cowlib allows unauthenticated remote denial of service via memory exhaustion. cow_spdy:inflate/2 in cowlib passes peer-supplied compressed bytes directly to zlib:inflate/2 with no output size bound. The SPDY header compression dictionary (?ZDICT) is public, and zlib compresses long runs of repeated bytes at roughly 1024:1, so a few kilobytes of SPDY frame payload can decompress to gigabytes on the BEAM heap, OOM-killing the node. A single unauthenticated SPDY frame is sufficient to trigger the condition. The parsers for syn_stream, syn_reply, and headers frame types are all affected via cow_spdy:parse_headers/2. This issue affects cowlib from 0.1.0 before 2.16.1.

Created: 2026-05-12 Last update: 2026-06-04 13:31

2 security issues in forky high

There are 2 open security issues in forky.

2 important issues:

CVE-2026-7790: Uncontrolled Resource Consumption vulnerability in ninenines cowlib (cow_http_te module) allows Excessive Allocation. The chunked transfer-encoding parser in cow_http_te accepts an unbounded number of hex digits in the chunk-size field. Each digit causes a bignum multiplication (Len * 16 + digit), so parsing N hex digits requires O(N²) CPU work and O(N) memory. Additionally, when input is drip-fed, the parser discards the accumulated length on each partial read and restarts from zero on resumption, raising the cost to O(N³). An unauthenticated remote attacker can exploit this by sending an HTTP/1.1 request with Transfer-Encoding: chunked and a very long chunk-size hex string to cause denial of service through CPU exhaustion and memory amplification. This vulnerability is associated with program file src/cow_http_te.erl and program routines cow_http_te:stream_chunked/2, cow_http_te:chunked_len/4. This issue affects cowlib: from 0.6.0 before 2.16.1.
CVE-2026-43970: Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in ninenines cowlib allows unauthenticated remote denial of service via memory exhaustion. cow_spdy:inflate/2 in cowlib passes peer-supplied compressed bytes directly to zlib:inflate/2 with no output size bound. The SPDY header compression dictionary (?ZDICT) is public, and zlib compresses long runs of repeated bytes at roughly 1024:1, so a few kilobytes of SPDY frame payload can decompress to gigabytes on the BEAM heap, OOM-killing the node. A single unauthenticated SPDY frame is sufficient to trigger the condition. The parsers for syn_stream, syn_reply, and headers frame types are all affected via cow_spdy:parse_headers/2. This issue affects cowlib from 0.1.0 before 2.16.1.

Created: 2026-05-12 Last update: 2026-06-04 13:31

Does not build reproducibly during testing normal

A package building reproducibly enables third parties to verify that the source matches the distributed binaries. It has been identified that this source package produced different results, failed to build or had other issues in a test environment. Please read about how to improve the situation!

Created: 2024-08-21 Last update: 2026-06-10 22:33

1 new commit since last upload, is it time to release? normal

vcswatch reports that this package seems to have new commits in its VCS but has not yet updated debian/changelog. You should consider updating the Debian changelog and uploading this new version into the archive.

Here are the relevant commit logs:

commit b3a5a7e86a2fdee045699455075842ddda56422b
Author: Balint Reczey <balint.reczey@canonical.com>
Date:   Tue Oct 30 00:25:44 2018 +0100

    Remove myself from Uploaders

Created: 2018-10-30 Last update: 2026-06-08 06:30

lintian reports 2 warnings normal

Lintian reports 2 warnings about this package. You should make the package lintian clean getting rid of them.

Created: 2020-07-29 Last update: 2025-09-10 19:32

2 low-priority security issues in trixie low

There are 2 open security issues in trixie.

2 issues left for the package maintainer to handle:

CVE-2026-7790: (needs triaging) Uncontrolled Resource Consumption vulnerability in ninenines cowlib (cow_http_te module) allows Excessive Allocation. The chunked transfer-encoding parser in cow_http_te accepts an unbounded number of hex digits in the chunk-size field. Each digit causes a bignum multiplication (Len * 16 + digit), so parsing N hex digits requires O(N²) CPU work and O(N) memory. Additionally, when input is drip-fed, the parser discards the accumulated length on each partial read and restarts from zero on resumption, raising the cost to O(N³). An unauthenticated remote attacker can exploit this by sending an HTTP/1.1 request with Transfer-Encoding: chunked and a very long chunk-size hex string to cause denial of service through CPU exhaustion and memory amplification. This vulnerability is associated with program file src/cow_http_te.erl and program routines cow_http_te:stream_chunked/2, cow_http_te:chunked_len/4. This issue affects cowlib: from 0.6.0 before 2.16.1.
CVE-2026-43970: (needs triaging) Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in ninenines cowlib allows unauthenticated remote denial of service via memory exhaustion. cow_spdy:inflate/2 in cowlib passes peer-supplied compressed bytes directly to zlib:inflate/2 with no output size bound. The SPDY header compression dictionary (?ZDICT) is public, and zlib compresses long runs of repeated bytes at roughly 1024:1, so a few kilobytes of SPDY frame payload can decompress to gigabytes on the BEAM heap, OOM-killing the node. A single unauthenticated SPDY frame is sufficient to trigger the condition. The parsers for syn_stream, syn_reply, and headers frame types are all affected via cow_spdy:parse_headers/2. This issue affects cowlib from 0.1.0 before 2.16.1.

You can find information about how to handle these issues in the security team's documentation.

Created: 2026-05-12 Last update: 2026-06-04 13:31

2 low-priority security issues in bookworm low

There are 2 open security issues in bookworm.

2 issues left for the package maintainer to handle:

CVE-2026-7790: (needs triaging) Uncontrolled Resource Consumption vulnerability in ninenines cowlib (cow_http_te module) allows Excessive Allocation. The chunked transfer-encoding parser in cow_http_te accepts an unbounded number of hex digits in the chunk-size field. Each digit causes a bignum multiplication (Len * 16 + digit), so parsing N hex digits requires O(N²) CPU work and O(N) memory. Additionally, when input is drip-fed, the parser discards the accumulated length on each partial read and restarts from zero on resumption, raising the cost to O(N³). An unauthenticated remote attacker can exploit this by sending an HTTP/1.1 request with Transfer-Encoding: chunked and a very long chunk-size hex string to cause denial of service through CPU exhaustion and memory amplification. This vulnerability is associated with program file src/cow_http_te.erl and program routines cow_http_te:stream_chunked/2, cow_http_te:chunked_len/4. This issue affects cowlib: from 0.6.0 before 2.16.1.
CVE-2026-43970: (needs triaging) Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in ninenines cowlib allows unauthenticated remote denial of service via memory exhaustion. cow_spdy:inflate/2 in cowlib passes peer-supplied compressed bytes directly to zlib:inflate/2 with no output size bound. The SPDY header compression dictionary (?ZDICT) is public, and zlib compresses long runs of repeated bytes at roughly 1024:1, so a few kilobytes of SPDY frame payload can decompress to gigabytes on the BEAM heap, OOM-killing the node. A single unauthenticated SPDY frame is sufficient to trigger the condition. The parsers for syn_stream, syn_reply, and headers frame types are all affected via cow_spdy:parse_headers/2. This issue affects cowlib from 0.1.0 before 2.16.1.

You can find information about how to handle these issues in the security team's documentation.

Created: 2026-05-12 Last update: 2026-06-04 13:31

debian/patches: 1 patch to forward upstream low

Among the 1 debian patch available in version 1.3.0-3 of the package, we noticed the following issues:

1 patch where the metadata indicates that the patch has not yet been forwarded upstream. You should either forward the patch upstream or update the metadata to document its real status.

Created: 2023-02-26 Last update: 2023-02-26 15:54

Standards version of the package is outdated. wishlist

The package should be updated to follow the last version of Debian Policy (Standards-Version 4.7.4 instead of 4.1.4).

Created: 2018-08-20 Last update: 2026-03-31 15:01

testing migrations

This package will soon be part of the erlang-29 transition. You might want to ensure that your package is ready for it. You can probably find supplementary information in the debian-release archives or in the corresponding release.debian.org bug.

news

[rss feed]

[2024-08-19] erlang-cowlib 1.3.0-3 MIGRATED to testing (Debian testing watch)
[2024-07-19] erlang-cowlib REMOVED from testing (Debian testing watch)
[2018-06-05] erlang-cowlib 1.3.0-3 MIGRATED to testing (Debian testing watch)
[2018-05-30] Accepted erlang-cowlib 1.3.0-3 (source amd64) into unstable (Nobuhiro Iwamatsu)
[2017-01-10] erlang-cowlib 1.3.0-2 MIGRATED to testing (Debian testing watch)
[2016-12-30] Accepted erlang-cowlib 1.3.0-2 (source) into unstable (Balint Reczey)
[2015-05-05] erlang-cowlib 1.3.0-1 MIGRATED to testing (Britney)
[2015-04-29] Accepted erlang-cowlib 1.3.0-1 (source amd64) into unstable (Balint Reczey)
[2014-10-25] erlang-cowlib 1.0.0-1 MIGRATED to testing (Britney)
[2014-10-14] Accepted erlang-cowlib 1.0.0-1 (source amd64) into unstable (Balint Reczey)
[2014-08-13] erlang-cowlib 0.6.2-2 MIGRATED to testing (Britney)
[2014-08-07] Accepted erlang-cowlib 0.6.2-2 (source amd64) into unstable (Balint Reczey)
[2014-08-06] erlang-cowlib 0.6.2-1 MIGRATED to testing (Britney)

bugs [bug history graph]

all: 4
RC: 0
I&N: 3
M&W: 1
F&P: 0
patch: 0

links

homepage
lintian (0, 2)
buildd: logs, reproducibility, cross
popcon
browse source code
other distros
security tracker
debian patches

ubuntu

[Information about Ubuntu for Debian Developers]

version: 1.3.0-3build1